Crockpot Sweet Potato Casserole
This Slow Cooker Sweet Potato Casserole is the ultimate blend of creamy, buttery sweet potatoes topped with golden, gooey marshmallows.
Prep Time 15 minutes mins
Cook Time 3 hours hrs 30 minutes mins
Total Time 3 hours hrs 45 minutes mins
Course Side Dish
Cuisine American
Servings 8 servings
Calories 245 kcal
For the Sweet Potatoes:
- 4 cups peeled and diced sweet potatoes about 4 medium
- 1/2 cup unsalted butter melted
- 1/3 cup brown sugar packed
- 1/4 cup milk
- 1 tsp vanilla extract
- 1/2 tsp ground cinnamon
- 1/4 tsp nutmeg
- Pinch of salt
For the Topping:
- 1 1/2 cups mini marshmallows
- 1/2 cup chopped pecans optional, for crunch
- 2 tbsp brown sugar for extra caramelized sweetness
Prepare the Sweet Potatoes
Peel the sweet potatoes and cut them into roughly 1-inch cubes.
Place the diced sweet potatoes in a large mixing bowl.
Add melted butter, brown sugar, milk, vanilla extract, cinnamon, nutmeg, and a pinch of salt.
Pro Tip: Stir well until every cube is coated—this ensures each bite is flavorful and creamy.
Transfer to the Crockpot
Lightly grease the crockpot insert with butter or non-stick spray to prevent sticking.
Pour the sweet potato mixture into the slow cooker and spread it evenly.
Cover with the lid.
Pro Tip: Make sure the sweet potatoes are in a single layer as much as possible; this helps them cook evenly and prevents any mushy spots.
Cook the Sweet Potatoes
Set your slow cooker on LOW for 3–4 hours, or until sweet potatoes are fork-tender.
Stir once halfway through cooking to distribute heat evenly.
Pro Tip: Avoid lifting the lid too often—slow cookers hold heat, and frequent lid lifts can increase cooking time.
Add the Topping
Once the sweet potatoes are tender, sprinkle mini marshmallows evenly over the top.
If using, scatter chopped pecans and a little extra brown sugar over the marshmallows.
Cover again and cook on LOW for another 15–20 minutes, or until marshmallows are puffed and lightly golden.
Pro Tip: Keep a close eye during this last step—the marshmallows can go from perfectly golden to overly browned quickly.
Serve and Enjoy
Carefully scoop out servings onto plates or a serving dish.
Let it sit for 5 minutes before serving—this helps the casserole set slightly and makes it easier to serve.
Pro Tip: For extra flair, drizzle a tiny bit of melted butter over the top before serving—it adds shine and richness.
Nutritional Value (per serving)
- Calories: ~245
- Carbohydrates: 41g
- Protein: 2g
- Fat: 8g
- Saturated Fat: 4g
- Cholesterol: 20mg
- Fiber: 4g
- Sugar: 22g
- Sodium: 110mg
- Potassium: 460mg
Share your thoughts! Rate and comment below if you tried this recipe.
Nutrition Disclaimer:
The nutritional information provided on this website is an estimate only and is intended for general guidance. We cannot guarantee its accuracy and recommend consulting a qualified healthcare professional or registered dietitian for personalized nutrition advice.
Keyword crockpot sweet potato casserole, sweet potato casserole