If you’re looking for a dependable side dish that guests will look forward to every year, this Sweet Potato Casserole Recipe With Marshmallows is a great choice. The combination of creamy sweet potatoes, crunchy pecans, and golden toasted marshmallows creates a crowd-pleasing dish that is both simple and memorable.
One of the best things about this recipe is how easy it is to prepare. With a handful of everyday ingredients and a straightforward cooking process, you can create a delicious casserole that serves a large group.

1. Sweet Potato Casserole Recipe With Marshmallows (Yield: 16 Servings)
Ingredients
- 3 pounds sweet potatoes, peeled and cut into cubes
- ½ cup brown sugar, packed
- ⅓ cup butter, softened
- ½ teaspoon vanilla extract
- ¾ cup chopped pecans, divided
- ¼ teaspoon cinnamon, or to taste
- Salt and black pepper to taste
- 2 cups miniature marshmallows
Equipment
- 9 x 13-inch Casserole Dish
- Saucepan
- Mixing Bowls
Instructions
Preheat your oven to 350°F (175°C). Lightly grease a 9 x 13-inch casserole dish and set it aside.
Place the peeled and cubed sweet potatoes into a large saucepan. Add enough water to completely cover the sweet potatoes. Place the saucepan over medium-high heat and bring the water to a boil.
Once the water reaches a boil, reduce the heat slightly and continue cooking the sweet potatoes for approximately 15 to 20 minutes, or until they are fork-tender. The potatoes should be soft enough to mash easily without any firm pieces remaining.
Carefully drain the sweet potatoes and return them to the saucepan. Allow them to sit for a minute or two so excess moisture can evaporate. Removing extra moisture helps create a thicker casserole filling.
Transfer the cooked sweet potatoes to a large mixing bowl. Add the brown sugar, softened butter, vanilla extract, ½ cup of the chopped pecans, cinnamon, salt, and black pepper.
Using a potato masher or electric mixer, mash the sweet potatoes until smooth and creamy. Continue mixing until the ingredients are fully incorporated. Taste the mixture and adjust the cinnamon, salt, or pepper if desired.
Spoon the sweet potato mixture into the prepared casserole dish. Use a spatula to spread it evenly from corner to corner, creating a smooth surface.
Sprinkle the remaining ¼ cup chopped pecans evenly over the top of the sweet potato layer. This adds texture and helps create a beautiful finished casserole.
Place the casserole dish in the preheated oven and bake uncovered for 20 minutes. During this time, the casserole will heat through and the flavors will blend together.
Remove the casserole from the oven and carefully sprinkle the miniature marshmallows evenly across the entire surface. Try to distribute them in a single layer for even browning.
Return the casserole to the oven and continue baking for an additional 10 to 15 minutes. The marshmallows should become puffed and lightly golden on top.
Keep a close eye on the casserole during the final few minutes of baking since marshmallows can brown quickly. If desired, place the casserole under the broiler for 30 to 60 seconds to achieve deeper golden color.
Remove the casserole from the oven and allow it to rest for 5 to 10 minutes before serving. This helps the casserole set slightly and makes it easier to serve.
Serve warm and enjoy this classic side dish alongside your favorite holiday or family dinner menu.

2. Tips for Perfect Sweet Potato Casserole Recipe With Marshmallows
Choose sweet potatoes that are firm and free from soft spots for the best texture and flavor.
Cut the sweet potatoes into evenly sized cubes before boiling. Uniform pieces cook more evenly and mash more smoothly.
Drain the cooked sweet potatoes thoroughly. Excess water can make the casserole filling too loose.
Mash the sweet potatoes while they are still warm. This helps create a smoother consistency and makes the ingredients easier to combine.
Spread the marshmallows evenly over the casserole for consistent browning and a more attractive presentation.
Watch the casserole closely during the final baking stage. Marshmallows can go from perfectly golden to overly browned in a short amount of time.
Allow the casserole to rest briefly before serving so the filling has time to settle.
3. Frequently Asked Questions
Can I prepare Sweet Potato Casserole in advance?
Yes. You can prepare the sweet potato mixture and spread it in the casserole dish up to one day ahead. Cover and refrigerate it, then add the marshmallows just before the final baking stage.
Can I use large marshmallows instead of miniature marshmallows?
Yes. Large marshmallows can be used if necessary. Cut them into smaller pieces to help create a more even topping across the casserole.
How should I store leftovers?
Store leftover casserole in an airtight container or tightly covered baking dish in the refrigerator for up to 4 days. Reheat before serving.
Can I freeze Sweet Potato Casserole?
Yes. The sweet potato base freezes well for up to 3 months. For best results, add fresh marshmallows after thawing and before reheating.
What main dishes pair well with Sweet Potato Casserole?
This casserole pairs wonderfully with roasted turkey, baked ham, roast chicken, pork loin, beef roast, and many traditional holiday meals.
4. Nutrition Information
The following nutrition values are approximate and based on 16 servings.
| Nutrient | Amount Per Serving |
|---|---|
| Calories | 155 |
| Protein | 2 g |
| Carbohydrates | 25 g |
| Fat | 6 g |
| Saturated Fat | 2 g |
| Cholesterol | 8 mg |
| Sodium | 70 mg |
| Fiber | 2 g |
| Sugar | 14 g |
| Potassium | 290 mg |
This Easy Sweet Potato Casserole Recipe With Marshmallows is a comforting side dish that brings together creamy sweet potatoes, crunchy pecans, and a golden marshmallow topping in every bite. It’s simple enough for everyday family dinners yet special enough for holiday celebrations and festive gatherings.
With its easy preparation and crowd-pleasing appeal, this casserole is a recipe you’ll be happy to keep in your collection. Serve it warm alongside your favorite main dishes and enjoy a classic comfort food that never fails to impress.