Craving a delightful dessert that effortlessly combines the rich flavors of peanut butter and chocolate? Look no further than these incredible peanut butter chocolate chip cookie bars! Thick, irresistibly chewy, and loaded with generous amounts of both peanut butter and chocolate chips, these bars offer all the joy of your favorite cookies but in an incredibly convenient and easy-to-make format. Perfect for satisfying your sweet tooth any day, they’re also an ideal treat for holidays, special gatherings, or simply a cozy evening at home.

Why These Peanut Butter Chocolate Chip Cookie Bars Are Your New Go-To Dessert
Are you searching for an indulgent treat that’s not only incredibly delicious but also surprisingly simple to whip up? These peanut butter chocolate chip cookie bars are an absolute game-changer. They’re a dream come true for peanut butter enthusiasts and chocoholics alike, delivering a harmonious blend of nutty and sweet flavors in every bite. Unlike traditional cookies that require individual scooping and careful baking, these bars are baked in a single pan, making them a much quicker and easier alternative.
Imagine soft, chewy centers with slightly crisp edges, bursting with creamy peanut butter and melty chocolate. That’s exactly what these bars deliver! This recipe streamlines the baking process, allowing you to have a fresh batch ready in around 40 minutes. This speed and simplicity make them perfect for virtually any occasion. Whether you need a quick dessert for an impromptu picnic, a crowd-pleaser for family reunions, a festive addition to holiday spreads, or even a popular item for a bake sale, these cookie bars fit the bill perfectly.
If you’re already a fan of the sheer convenience and deliciousness of chewy cookie bars, you’ll love adding this recipe to your collection. We have a variety of other easy cookie bar recipes that are equally delightful. Our sugar cookie bars are fantastic around the holidays, easily customizable with different frosting colors and sprinkles for any celebration. For a refreshing twist, try our lemon bars, offering a perfect balance of sweet and tart – the quintessential treat for spring and summer. And for a nostalgic snack that’s great for lunchboxes, our peanut butter and jelly cookie bars are an absolute hit. If you’re obsessed with candy bars, our millionaire bars offer a decadent experience with a thick, gooey caramel center that rivals your favorite chocolate bar.

The Ultimate Peanut Butter and Chocolate Experience
For those who believe peanut butter is a love language, this recipe will speak volumes! The combination of peanut butter and chocolate is a classic for a reason – their complementary flavors create an unparalleled taste sensation that’s both comforting and exciting. These bars maximize that experience by incorporating peanut butter directly into the dough and then studding it with both peanut butter chips and chocolate chips, ensuring an intense burst of flavor with every bite.
There’s truly no such thing as too many peanut butter dessert recipes. If you share this passion, you’ll find even more peanut butter-flavored sweets later in this article to satisfy every craving. But for now, let’s focus on mastering this incredibly easy recipe for chewy peanut butter chocolate chip cookie bars.
Essential Ingredients for Perfect Peanut Butter Chocolate Chip Cookie Bars
Creating these delectable cookie bars starts with quality ingredients. Here’s what you’ll need, along with some helpful notes and substitution options to ensure your baking success.

- All-Purpose Flour: This is the foundation of our chewy cookie bars. We tested this recipe extensively with all-purpose flour for the best texture. If you happen to be using self-rising flour, remember to omit the baking powder from this recipe as it’s already included in self-rising varieties.
- Baking Powder: Our crucial leavening agent, baking powder helps these bars rise beautifully, giving them their desirable thick and airy quality.
- Fine Sea Salt: A pinch of salt is vital for activating the baking powder and balancing the sweetness of the sugars and chips. It enhances all the flavors, making them pop. Kosher salt can be used as an equally effective substitute if you prefer.
- Unsalted Butter: Using unsalted butter allows you to control the exact amount of salt in the recipe. Make sure it’s softened to room temperature for about 30 to 45 minutes before you begin. This ensures it creams smoothly with the peanut butter, leading to a perfectly textured dough.
- Peanut Butter: Creamy peanut butter is my top recommendation for achieving a smooth, consistent dough and melt-in-your-mouth texture. However, if you enjoy a delightful crunch in your cookie bars, feel free to use crunchy peanut butter in the same quantities. Avoid using natural peanut butter (the kind that separates) as its inconsistent texture can make it challenging to mix properly into the cookie dough.
- Granulated Sugar: Standard white sugar provides essential sweetness and contributes to the overall texture of the bars.
- Light Brown Sugar: This ingredient is key to the cookie bars’ signature chewiness and adds a wonderful depth of flavor with its subtle molasses notes. While light brown sugar is preferred, dark brown sugar can also be used if that’s what you have on hand; it will impart a slightly richer, deeper molasses taste.
- Large Eggs: Eggs play a dual role, acting as a binder to hold all the ingredients together and assisting with the leavening process, contributing to the bars’ rise and structure.
- Vanilla Extract: Pure vanilla extract offers a superior, more robust flavor that truly elevates the cookie bars. In a pinch, imitation vanilla extract will also work, but the depth of flavor won’t be quite the same.
- Peanut Butter Chips: For an extra boost of irresistible peanut butter flavor, these chips are a must! They melt beautifully and distribute nutty goodness throughout each bar.
- Chocolate Chips: Semi-sweet chocolate chips are my choice as they provide a perfect balance of sweetness without overpowering the peanut butter. They’re rich, satisfying, and blend wonderfully. However, feel free to use milk chocolate chips for a sweeter bar or chocolate chunks for a more intense chocolate experience.
Essential Equipment for Baking Success
Having the right tools makes the baking process smoother and more enjoyable. Here’s a simple list of the equipment you’ll need for these peanut butter chocolate chip cookie bars:
- Measuring cups and spoons: For accurate ingredient proportions.
- Large mixing bowls: To combine your dry and wet ingredients effectively.
- 9×13 baking pan: The ideal size for these thick, chewy bars.
- Parchment paper: To ensure easy removal and clean-up.
- Stand mixer or electric hand mixer: Essential for creaming butter and peanut butter to achieve the perfect dough consistency.
Step-by-Step Guide: How to Bake These Irresistible Cookie Bars
Ready to create a batch of these amazing cookie bars? Follow these simple, clear steps for baking success.
Step 1: Prepare Your Oven and Pan
Preheat your oven to 375°F (190°C). Line a 9×13-inch baking pan with parchment paper, allowing it to overhang slightly on the sides. This overhang will act as a sling, making it incredibly easy to lift the baked bars out later. Set the prepared pan aside.
Step 2: Combine Dry Ingredients
In a large mixing bowl, whisk together the all-purpose flour, baking powder, and fine sea salt until thoroughly combined. This ensures the leavening agent and salt are evenly distributed throughout the dough. Set this bowl aside for later.

Step 3: Cream Butter and Peanut Butter
In the bowl of a stand mixer fitted with a paddle attachment, or using a large bowl and an electric hand mixer, cream together the softened unsalted butter and creamy peanut butter. Mix on medium speed until the mixture is light, fluffy, and smooth. This step incorporates air, contributing to the bars’ tender texture.

Step 4: Incorporate Sugars
Add both the granulated sugar and light brown sugar to the creamed butter and peanut butter mixture. Continue to beat on medium speed until the sugars are fully incorporated and the mixture is light and well-combined, scraping down the sides of the bowl as needed.

Step 5: Add Eggs and Vanilla
Crack the eggs into the mixture one at a time, mixing well after each addition until just combined. Overmixing at this stage can lead to tougher bars. Once the eggs are incorporated, stir in the vanilla extract until it’s evenly distributed, infusing the dough with its fragrant warmth.

Step 6: Gradually Add Flour Mixture
With the mixer on low speed, gradually add the dry flour mixture to the wet ingredients, a little at a time. Mix until the flour is just incorporated and no dry streaks remain. Be careful not to overmix the dough, as this can develop the gluten too much and result in a dense, tough cookie bar. Stop mixing as soon as the ingredients are combined.

Step 7: Fold in the Chips
Gently fold in the peanut butter chips and chocolate chips using a spatula or spoon until they are just evenly distributed throughout the cookie dough. This ensures that every bar is packed with both delightful flavors.

Step 8: Bake to Golden Perfection
Press the prepared cookie dough evenly into the lined baking pan. Use the back of a spoon or your hands to ensure it’s spread smoothly and reaches all corners of the pan. Place the pan in the preheated oven and bake for 25-30 minutes. You’ll know the bars are perfectly baked when a toothpick inserted into the center comes out clean or with a few moist crumbs clinging to it, but no wet batter.

Step 9: Cool, Cut, and Serve
Once baked, remove the pan from the oven and let the cookie bars cool completely in the pan on a wire rack. This step is crucial; cutting them while warm will cause them to crumble. Once cooled, use the parchment paper overhang to carefully lift the entire slab of bars out of the pan. Transfer to a cutting board, cut into individual bars, and serve. Enjoy!

Serving Suggestions for Your Decadent Cookie Bars
These peanut butter chocolate chip cookie bars are incredibly versatile and pair wonderfully with a variety of beverages and desserts. For a classic comfort food experience, serve them alongside a tall, frosty glass of cold milk. The creaminess of the milk perfectly complements the rich flavors of the bars. If you prefer a warm beverage, a freshly brewed cup of coffee or a cozy mug of hot chocolate makes for an exquisite pairing, especially on cooler days. For an extra special treat, consider adding a scoop of vanilla ice cream on top of a slightly warmed bar – the melting ice cream creates a delightful contrast in temperature and texture.
Storage and Freezing Instructions
To keep your peanut butter chocolate chip cookie bars fresh and delicious, proper storage is key.
- Room Temperature: Store the cooled cookie bars in an airtight container at room temperature for up to 5 days. This will maintain their wonderful chewy texture.
- Freezing: These bars freeze exceptionally well, allowing you to enjoy them for longer. You can freeze them for up to 3 months. For best results, once completely cooled, wrap individual cookie bars tightly in plastic wrap or freezer paper before placing them in a freezer-safe bag or airtight container. This prevents freezer burn and makes it easy to grab one or two at a time. To enjoy, simply thaw them at room temperature for an hour or so.
Expert Tips for the Best Peanut Butter Chocolate Chip Cookie Bars
Achieving bakery-quality cookie bars at home is easier than you think with these expert tips and tricks:
- Cool Completely for Clean Cuts: Patience is a virtue, especially when it comes to cutting these bars. Allow the chewy peanut butter cookie bars to cool completely in the pan before attempting to remove and cut them. If you try to slice them while they’re still warm, they tend to fall apart or become a gooey mess. Cooling allows them to firm up, ensuring neat, perfect squares.
- For a Gooey Center: If you adore bars with a super gooey, soft center, consider reducing the baking time by about 5 minutes. Keep a close eye on them; the edges should be set, but the center might still look slightly underdone. They will continue to set as they cool.
- Peanut Butter-Free Option: Not a fan of peanut butter in the batter, but still want the chocolate chips? You can easily replace the peanut butter in the dough with an equal amount of softened unsalted butter. The result will be rich, buttery chocolate chip cookie bars.
- The Parchment Paper Advantage: While you can grease your baking pan, lining it with parchment paper is highly recommended. It acts as a sling, making it incredibly easy to lift the entire slab of baked bars out of the pan for effortless cutting and minimal cleanup.
- Softening Butter in a Hurry: Forgot to take your butter out to soften? Don’t fret! You can quickly soften it in the microwave. Pop it in for 10-15 second intervals on low power, checking after each burst, until it’s just soft enough to dent with your finger, but not melted. If it accidentally melts, let it cool down before adding it to other ingredients.
- Top with Extra Chips: For an extra visually appealing and chip-packed finish, save a small handful (about a few tablespoons) of both peanut butter and chocolate chips. Sprinkle them evenly over the top of the cookie dough right before it goes into the oven.
- Adjust Baking Time for Pan Material: The type of baking pan can affect baking time. Glass baking dishes often require a few extra minutes of baking, while metal pans might bake a little faster. Always adjust your baking time slightly and rely on the toothpick test for doneness.
- Master the Toothpick Test: When checking for doneness, a toothpick inserted into the center should come out clean or with a few moist crumbs clinging to it. If the toothpick is coated in wet batter, the bars need a few more minutes in the oven. Return them to the oven and test again after 2-3 minutes.

Creative Variations and Additions to Your Cookie Bars
These peanut butter chocolate chip cookie bars are fantastic as is, but they also offer a wonderful canvas for customization. Feel free to get creative and experiment with these delightful variations:
- Change Up the Chocolate Chips: Don’t limit yourself to semi-sweet! Experiment with different types of chocolate chips to alter the flavor profile. Try milk chocolate chips for a sweeter bar, dark chocolate chips for a deeper, more intense chocolate flavor, or even white chocolate chips for a creamy, contrasting sweetness. Chocolate chunks can also be used for bigger pockets of melted chocolate.
- Embrace Chunky Peanut Butter: If you enjoy a delightful textural contrast, swap creamy peanut butter for chunky peanut butter. It will add a pleasant crunch and an even more pronounced roasted peanut flavor throughout the bars. Use the same amount as creamy peanut butter.
- A Sprinkle of Sea Salt Flakes: For a gourmet touch that truly enhances the flavors, sprinkle a tiny amount of flaky sea salt on top of the cookie dough just before baking. The salt crystals provide a subtle crunch and brilliantly bring out the sweetness of both the peanut butter and chocolate. Trust me, this simple addition makes a big difference!
- Add Nuts for Extra Crunch: Introduce another layer of texture by adding chopped nuts. Replace a small portion of the peanut butter chips or chocolate chips with an equal amount of chopped peanuts, pecans, or walnuts. This will give your chewy peanut butter cookies a lovely, satisfying crunch.
- Double the Vanilla Impact: If you’re a true admirer of the rich, aromatic depth that vanilla extract brings to baked goods, consider doubling the amount in this recipe. Instead of one teaspoon, use two teaspoons for an even more pronounced and comforting vanilla flavor in these easy cookie bars.
- Chopped Peanut Butter Cups: For the ultimate indulgence and a truly decadent twist, replace a portion of both the peanut butter chips and chocolate chips with an equal amount of chopped mini peanut butter cups. The way they melt into the bars is simply divine!
- Add Mini M&M’s: For a fun, colorful, and extra chocolatey touch, stir in a cup of mini M&M’s along with the chocolate chips. They add a delightful candy shell crunch and visual appeal.

Frequently Asked Questions (FAQ) About Peanut Butter Chocolate Chip Cookie Bars
Can I use natural peanut butter instead of regular peanut butter?
This recipe has been thoroughly tested with creamy peanut butter and crunchy peanut butter, both of which yield excellent results. I do not recommend using natural peanut butter (the kind that requires stirring) because its consistency can be quite oily and separate, making it difficult to properly incorporate into the cookie dough, which could negatively impact the texture of your bars. If you absolutely must use natural peanut butter, a “no-stir” variety would likely perform best, but proceed with caution.
Can I bake the bars in smaller pans?
Yes, you certainly can! Baking these bars in smaller pans, such as an 8×8-inch or 9×9-inch pan, will result in thicker cookie bars. However, keep in mind that you’ll need to adjust the baking time. Expect to add an additional 3-5 minutes to the cooking time, or until a toothpick inserted into the center comes out clean.
Can I substitute oil for butter?
No, it is not recommended to substitute oil for butter in this particular recipe for peanut butter chocolate chip bars. Butter plays a crucial role in providing the rich flavor, structure, and chewy texture of these bars. Using oil instead would significantly alter the texture, making them potentially more cake-like or greasy, and changing the overall flavor profile.
Can I Use Sunflower Butter or Another Nut Butter?
While we haven’t extensively tested this specific recipe with various types of alternative butters, other “no-stir” type nut butters, such as almond butter or cashew butter, should work as a direct substitute in terms of consistency. However, be aware that substituting will undoubtedly alter the distinct peanut butter flavor that is central to these bars. For a truly authentic taste, stick to peanut butter.
Can I make the cookie dough ahead of time?
Yes, you can prepare the cookie dough a day or two in advance. After mixing, cover the bowl tightly with plastic wrap and refrigerate. When ready to bake, let the dough sit at room temperature for about 20-30 minutes to soften slightly before pressing it into the pan.
More Irresistible Peanut Butter Desserts to Try
If you’ve fallen in love with the rich, peanut buttery goodness of these chocolate chip bars, then get ready to satisfy your inner peanut butter aficionado even further! The delicious recipes below are sure to delight:
- Peanut Butter Balls with Rice Krispies
- Chocolate Peanut Butter No Bake Cookies – A reader favorite!
- Peanut Butter Cornflake Cookies
- 3-Ingredient Peanut Butter Cookies
- Peanut Butter Blossom Cookies
- No Bake Chocolate Peanut Butter Bars – Made with only 5 ingredients!
- Peanut Butter Cup Cookies
- 3-Ingredient Peanut Butter Fudge
- Chocolate Cake Mix Cookies with Peanut Butter Chips
Peanut Butter Chocolate Chip Cookie Bars
Author: Jaclyn
Rated 4.84 out of 5 stars by 18 readers.
Cook: 30 mins
Total: 40 mins
Servings: 15 servings
These peanut butter chocolate chip cookie bars are way easier than making a bunch of small cookies! Thick bars that are chewy on the inside and slightly crisp on the outside and packed with peanut butter and chocolate flavor — they’re irresistible!
Ingredients
- 2 ¼ cups all-purpose flour
- 1 teaspoon baking powder
- ½ teaspoon fine sea salt
- ½ cup unsalted butter, softened
- ½ cup creamy peanut butter
- ¾ cup granulated sugar
- ¾ cup light brown sugar, packed
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 ½ cups peanut butter chips
- 1 ½ cups semi-sweet chocolate chips
Instructions
- Preheat the oven to 375°F. Line a 9×13 baking pan with parchment paper, set aside.
- In a large bowl, stir together the flour, baking powder, and salt. Set aside.
- In the body of a stand mixer with the paddle attachment or in a large bowl with an electric hand mixer, cream the butter with the peanut butter until smooth.
- Add the granulated and brown sugar to the bowl and stir it in until combined. Add the eggs one at a time until fully mixed in along with the vanilla.
- Add the flour a little at a time until fully mixed in. Add the peanut butter chips and chocolate chips, stir until just combined.
- Press the cookie dough into the prepared baking pan. Bake for 25-30 minutes until a toothpick inserted into the center comes out clean.
- Let cool completely then lift the bars out using the parchment paper to help. Cut into bars and serve.
Notes
- If you like chewier bars with a gooey center, undercook these by about 5 minutes.
- You don’t have to use half peanut butter chips and half chocolate chips. You can substitute all of one or the other, if you prefer.
- If you’re a fan of crunchy peanut butter, you can use it in place of the creamy peanut butter.
- Store in an airtight container at room temperature (not in the fridge) for up to 5 days. Freeze for up to 2 months.
Nutrition
Serving: 1g | Calories: 261kcal
Did You Make This Recipe?
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