Crockpot Sweet Potato Casserole Recipe
Introduction
This Crockpot Sweet Potato Casserole is a cozy and comforting dish perfect for holiday gatherings or weeknight dinners. The sweet potatoes are tender and infused with warm spices, topped with gooey marshmallows for a delightful finish. Using a slow cooker makes preparation easy and hands-off.

Ingredients
- 1/2 cup maple syrup
- 1/2 cup packed brown sugar
- 1/2 cup salted butter
- 1 teaspoon vanilla extract
- 1/2 teaspoon ground cinnamon
- 1/4 teaspoon ground nutmeg
- 1/4 teaspoon salt
- 4 large sweet potatoes, peeled and sliced (about 4 pounds)
- 2 cups mini marshmallows
Instructions
- Step 1: Grease the inside of a 6-quart or larger crockpot with butter or nonstick spray.
- Step 2: In a microwave-safe bowl, combine maple syrup, brown sugar, and butter. Heat in 30-second intervals, stirring between, until the mixture is melted and the sugar has dissolved.
- Step 3: Stir vanilla extract, ground cinnamon, ground nutmeg, and salt into the melted mixture.
- Step 4: Place the sliced sweet potatoes in the crockpot. Pour the syrup mixture evenly over the sweet potatoes.
- Step 5: Cover and cook on low for 4 to 6 hours or high for 2 to 3 hours, stirring every 30 minutes, until the sweet potatoes are fork tender.
- Step 6: Sprinkle mini marshmallows evenly on top of the cooked sweet potatoes. For an extra special touch, use a mini blow torch to brûlée the marshmallows until golden and slightly crispy.
- Step 7: Serve the casserole warm, scooping portions onto plates or bowls.
Tips & Variations
- For a nutty crunch, sprinkle chopped pecans over the marshmallows before serving.
- Substitute maple syrup with honey or molasses for a different depth of sweetness.
- Use turkey bacon bits stirred in before cooking for a savory twist.
Storage
Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat gently in the microwave or oven until warmed through. If desired, add extra marshmallows on top before reheating to refresh the topping.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I prepare this casserole ahead of time?
Yes, you can assemble the casserole in the crockpot insert, cover, and refrigerate overnight. Cook on low the next day, adding extra cooking time as needed until the sweet potatoes are tender.
Can I make this recipe without marshmallows?
Absolutely. The casserole is delicious without marshmallows. For a less sweet version, omit marshmallows and top with a cinnamon-spiced oat crumble instead.
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Crockpot Sweet Potato Casserole Recipe
- Total Time: 4 hours 15 minutes to 6 hours 15 minutes
- Yield: 8 servings 1x
Description
This Crockpot Sweet Potato Casserole is the perfect comforting side dish made easy in your slow cooker. Sweet potatoes are cooked slowly with a rich and sweet syrup infused with brown sugar, cinnamon, nutmeg, and vanilla. Topped with mini marshmallows, this dish delivers a deliciously creamy, tender texture with a gooey, toasted marshmallow finish. Ideal for holiday dinners or cozy weeknight meals.
Ingredients
Syrup Mixture
- 1/2 cup maple syrup
- 1/2 cup packed brown sugar
- 1/2 cup salted butter
- 1 teaspoon vanilla extract
- 1/2 teaspoon ground cinnamon
- 1/4 teaspoon ground nutmeg
- 1/4 teaspoon salt
Main Ingredients
- 4 large sweet potatoes (peeled and sliced, about 4 pounds)
- 2 cups mini marshmallows
Instructions
- Prepare Crockpot: Grease the inside of a 6-quart or larger crockpot with butter or nonstick spray to prevent sticking and make cleanup easier.
- Melt Syrup Mixture: In a microwave-safe bowl, combine the maple syrup, brown sugar, and salted butter. Microwave in 30-second intervals, stirring in between, until the butter is fully melted and the sugar is dissolved.
- Add Spices and Flavorings: Stir in the vanilla extract, ground cinnamon, ground nutmeg, and salt into the melted syrup mixture until well combined.
- Layer Sweet Potatoes: Place the peeled and sliced sweet potatoes evenly into the crockpot. Pour the syrup mixture over the sweet potatoes to coat them thoroughly.
- Cook Sweet Potatoes: Cover the crockpot and cook on low for 4-6 hours or on high for 2-3 hours. Stir the mixture every 30 minutes to ensure even cooking and prevent sticking until the sweet potatoes are fork tender.
- Add Marshmallows: Once the sweet potatoes are cooked, evenly sprinkle the mini marshmallows on top. Optionally, use a mini blow torch to brûlée the marshmallows until golden and toasted.
- Serve: Scoop portions of the casserole and serve hot as a sweet and satisfying side dish.
Notes
- You can substitute maple syrup with honey or corn syrup if preferred.
- For a richer flavor, use unsalted butter and adjust the salt accordingly.
- Stirring every 30 minutes helps prevent the sweet potatoes from sticking or burning on the edges.
- The marshmallow brûlée is optional but adds a delightful texture and flavor contrast.
- Cooking time may vary slightly depending on your crockpot model and sweet potato thickness.
- Prep Time: 15 minutes
- Cook Time: 4-6 hours on low or 2-3 hours on high
- Category: Side Dish
- Method: Slow Cooking
- Cuisine: American
Keywords: sweet potato casserole, crockpot sweet potatoes, slow cooker side dish, holiday sweet potatoes, marshmallow sweet potatoes

