Slow Cooker Sweet Potato Casserole – Easy, Creamy & Perfect for Holidays

This Slow Cooker Sweet Potato Casserole is a warm, comforting, and irresistibly sweet side dish that’s perfect for Thanksgiving, Christmas, potlucks, and cozy family dinners. With tender sweet potatoes, buttery cinnamon flavor, and a delicious marshmallow–pecan topping, this crockpot version saves oven space while delivering all the classic holiday flavors you love.

Made with simple pantry ingredients and effortless slow cooking, this recipe guarantees a creamy, melt-in-your-mouth casserole every time.

Why You’ll Love This Recipe

•  Easy dump-and-cook preparation

•  No oven needed—perfect for busy holidays

•  Ultra creamy and naturally sweet

•  Customizable with toppings and flavor variations

•  Great for feeding a crowd

Ingredients

For the Casserole

• 4 large sweet potatoes, peeled and cubed

• 1/2 cup brown sugar

• 1/4 cup melted butter

• 1/4 cup milk

• 1 teaspoon vanilla extract

• 1/2 teaspoon cinnamon

• 1/4 teaspoon nutmeg

• 1/4 teaspoon salt

Topping

• 1 cup mini marshmallows

• 1/2 cup chopped pecans

Step-by-Step Instructions

Step 1: Load the Slow Cooker

Place the peeled and cubed sweet potatoes into the bottom of your slow cooker. Spread them out evenly for consistent cooking.

Step 2: Prepare the Sweet Mixture

In a small mixing bowl, combine:

• brown sugar

• melted butter

• milk

• vanilla extract

• cinnamon

• nutmeg

• salt

Whisk until smooth and well blended.

Step 3: Coat the Sweet Potatoes

Pour this sweet, buttery mixture over the sweet potatoes.
Stir everything well to make sure every piece is coated.

Step 4: Cook the Casserole

Cover the slow cooker and cook:

• LOW for 6–7 hours
  or

• HIGH for 3–4 hours

Cook until the sweet potatoes are soft, tender, and easily mashable.

Step 5: Mash the Sweet Potatoes

Using a spoon or potato masher, lightly mash the sweet potatoes right in the slow cooker.
Leave some texture, or mash completely if you prefer a smoother casserole.

Step 6: Add Marshmallows & Pecans

Sprinkle the mini marshmallows and chopped pecans evenly over the top.

Step 7: Melt and Toast

Cover again and cook on HIGH for 15–20 minutes, or until:

• the marshmallows are melted

• soft and gooey

• light golden on top

Step 8: Serve Warm

Serve immediately for the best flavor and texture.
Perfect as a holiday side dish or comfort-food treat!

Variations & Tips

Variations

• Healthier Version → Reduce the brown sugar or replace it with maple syrup.

• No Marshmallows? → Add a crunchy oat streusel topping made from oats, flour, butter, and brown sugar.

• Nut-Free → Omit pecans or swap with sunflower seeds.

• Spicy Twist → Add a small pinch of cayenne pepper for subtle heat.

• Creamier Texture → Mix in a splash more milk or a spoonful of cream while mashing.

Tips

• For extra flavor, toast the pecans before topping.

• If you like very smooth casserole, use an immersion blender after cooking.

• Keep the lid on while topping heats so the marshmallows melt properly.

• Double the recipe in a large slow cooker for feeding big crowds.

Serving Ideas

Serve with:

• Turkey or ham

• Roasted chicken

• Stuffing

• Green beans

• Holiday dinner spreads

enjoy!