This sweet potato casserole made with canned yams is an easy, crowd-pleasing side for holidays or weeknight dinners. Two large cans of yams are mashed with maple syrup, warm spices, eggs, and a splash of milk, then baked beneath a crunchy pecan-oat streusel. It delivers classic comfort without the fuss of peeling or boiling fresh sweet potatoes.
Because the yams come from the can, active prep time is short — roughly 10 minutes — before the dish goes into the oven. The result is a smooth, subtly sweet filling topped with a toasted pecan crunch.
If you prefer a marshmallow-topped casserole or want to make the dish in a slow cooker, there are easy alternative versions. This recipe focuses on a maple-spiced filling and a textured pecan-oat streusel for a balanced sweet-and-savory side.
This casserole is for anyone who wants the flavor of a made-from-scratch side with minimal effort and a satisfying crunchy topping that looks like you spent more time on it than you did.
Why You’ll Love This Sweet Potato Casserole
- No peeling or boiling. Drain the canned yams and mash them straight in the bowl.
- Crispy pecan streusel. Pecans, oats, brown sugar, flour, and butter bake into a golden, crunchy topping.
- Simple pantry ingredients. Pure maple syrup, warm spices, eggs, vanilla, and milk make a flavorful, creamy filling.
- Feeds a crowd. A 9×13-inch or 3-quart casserole serves about 12, making it ideal for potlucks and holiday tables.
Ingredients
Below are the ingredient highlights and useful substitutions. Exact measurements and the printable recipe card are available in the recipe section further down.
- Canned yams in syrup – Two 29-ounce cans, drained. Yams packed in syrup add a touch of sweetness and help the filling mash smoothly.
- Pure maple syrup – Adds a natural, warm sweetness and complements the spices. Use real maple syrup rather than pancake syrup for best flavor.
- Eggs and whole milk – Eggs help set the filling so it scoops cleanly, while milk keeps the texture creamy.
- Vanilla and warm spices – Cinnamon, ground ginger, and a hint of sage round out the flavor; salt balances the sweetness.
- Butter – Used twice: thin slices over the filling melt during baking, and cold cubes are cut into the streusel for flaky clumps.
- Pecans, flour, brown sugar, and old-fashioned oats – Make up the streusel. Rolled oats hold texture and chew after baking.
How to Make Sweet Potato Casserole with Canned Yams
A straightforward, four-step process yields a creamy filling and a perfectly toasted topping. The full recipe with exact measurements appears in the printable recipe card below.
Step 1: Preheat the oven and grease a 9×13-inch or 3-quart baking dish. Mash the drained yams in a large bowl, then stir in maple syrup, eggs, milk, vanilla, cinnamon, ginger, sage, and salt until mostly smooth. Spread the mixture into the prepared dish.
Step 2: Arrange thin butter slices across the top of the filling. These will melt into the surface as the casserole bakes, adding richness.
Step 3: In a separate bowl, combine pecans, flour, brown sugar, oats, cinnamon, and a pinch of salt. Work cold butter cubes into the dry mix with a pastry cutter or two forks until pea-sized clumps form. Distribute the streusel evenly over the yams.
Step 4: Bake until the topping turns golden, about 35–38 minutes. Allow the casserole to rest for 10 minutes so the filling firms up slightly for clean serving.
Serving Suggestions
This casserole pairs beautifully with roasted turkey, baked ham, or glazed spiral ham. For a full holiday plate, serve it alongside green bean casserole, homemade stuffing, and cranberry sauce. The sweet-and-spicy filling and crunchy streusel make it a versatile side for any celebratory meal.
Storage
Cool leftovers to room temperature, then cover the dish tightly or transfer portions to an airtight container. Store in the refrigerator for up to four days. Reheat the entire casserole in the oven to restore crispness, or warm individual servings in the microwave. The streusel softens in the fridge but regains texture when reheated in the oven.
Tips for the Best Sweet Potato Casserole
- Drain but don’t rinse. A little syrup left on the yams helps them mash smooth and adds flavor.
- Adjust texture to taste. Mash by hand if you like some small chunks, or use a hand mixer for a silky-smooth filling.
- Keep streusel butter cold. Cold butter yields flaky, crumbly bits; if it warms while you work, chill the bowl briefly.
- Let it rest before serving. Ten minutes of cooling helps the filling set, so slices hold together when served.
Additions and Variations
- Brown sugar layer: For extra caramelized sweetness, sprinkle a thin layer of packed brown sugar over the butter slices before adding the streusel.
- Swap nuts: Use chopped walnuts instead of pecans if you prefer a different nut flavor.
- Make it sweeter: Omit the sage for a more traditional, purely sweet casserole if desired.
Sweet Potato Casserole FAQ
In many supermarkets, canned yams are actually orange sweet potatoes packed in syrup. They may be labeled as yams or cut sweet potatoes; either variety works for this casserole.
Yes. Fresh sweet potatoes must be cooked and mashed first, which removes the shortcut this recipe provides. If you prefer fresh, choose a recipe designed for cooked sweet potatoes to get the best texture.
Yes. You can assemble the filling up to one day ahead and refrigerate it, keeping the streusel separate. Add the streusel just before baking and increase the bake time by 5–10 minutes when baking from cold.
More Thanksgiving Side Dishes
- Jiffy Cornbread Casserole
- Old-Fashioned Mashed Potatoes
- Southern Green Beans
- Red Skin Mashed Potatoes
- Sweet Potato Cornbread
Sweet Potato Casserole with Canned Yams
Author: Jaclyn
Ingredients
Sweet Potato Filling
- 2 (29-ounce) cans yams in syrup, drained
- 3 tablespoons pure maple syrup
- 2 large eggs, lightly beaten
- ¼ cup whole milk
- 1 teaspoon vanilla extract
- 1 ½ teaspoons ground cinnamon
- 1 teaspoon ground ginger
- 1 teaspoon ground sage
- ½ teaspoon salt
- 4 tablespoons unsalted butter, thinly sliced
Pecan Streusel
- 1 cup chopped pecans
- ½ cup all-purpose flour
- ½ cup light brown sugar, packed
- ¾ cup old-fashioned rolled oats
- 1 teaspoon ground cinnamon
- pinch salt
- 4 tablespoons unsalted butter, cold and cut into small cubes
Instructions
Make the filling:
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Preheat the oven to 350°F. Spray or grease a 9×13-inch or 3-quart baking dish and set aside.
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Add the drained yams to a large bowl and mash until mostly smooth.
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Mix in the maple syrup, eggs, milk, vanilla, cinnamon, ginger, sage, and salt. Stir until the mixture is well combined and the potatoes are fully mashed.
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Spread the mashed yams evenly in the prepared dish. Arrange the thin butter slices over the top in a single layer.
Make the streusel and bake:
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In a separate bowl, combine the pecans, flour, brown sugar, oats, cinnamon, and a pinch of salt until blended.
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Add the cold butter cubes and cut them into the dry ingredients with a pastry cutter or two forks until pea-sized clumps form.
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Sprinkle the streusel evenly over the yams.
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Bake for 35–38 minutes, until the topping is golden and crisp. Let the casserole rest for 10 minutes before serving.
Notes
Texture: Mash by hand for a bit of texture, or use a hand mixer if you prefer a very smooth filling.
No pastry cutter? Use two forks and pull them past each other through the butter and dry mix until small clumps form.
Make-ahead: Assemble the filling up to one day ahead and refrigerate it covered. Keep the streusel separate and add it just before baking. Increase baking time by 5–10 minutes if baking from cold.
Storage: Refrigerate leftovers in an airtight container for up to four days. Reheat in the oven to refresh the topping or microwave single servings.
Nutrition
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Carbohydrates: 46g
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Protein: 5g
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Fat: 15g
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Fiber: 5g
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Sugar: 20g
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