American Sweet Potato Casserole

Name: American Sweet Potato Casserole
Cook time: 45 min
Total time: 45 min
Yield: 8 servings
Cuisine: American
Ingredients: 3 large sweet potatoes (about 900 g), peeled and cubed; 1/4 cup (60 g) unsalted butter, melted; 1/4 cup (50 g) brown sugar; 1 tsp (2 g) ground cinnamon; 1/2 tsp (3 g) salt; 1/4 cup (60 ml) milk; 1 cup (100 g) mini marshmallows; 1/2 cup (60 g) chopped pecans

By colorontable

Updated July 20, 2026

Cook Time 45 min

Servings 8

Difficulty Easy

Cal per serving 250

Ingredients

8 servings

3 large sweet potatoes (about 900 g), peeled and cubed
1/4 cup (60 g) unsalted butter, melted
1/4 cup (50 g) brown sugar
1 tsp (2 g) ground cinnamon
1/2 tsp (3 g) salt
1/4 cup (60 ml) milk
1 cup (100 g) mini marshmallows
1/2 cup (60 g) chopped pecans

American Sweet Potato Casserole is a delightful holiday dish that combines the natural sweetness of mashed sweet potatoes with a crunchy topping of toasted pecans and mini marshmallows. The vibrant orange puree is both comforting and visually appealing, making it a favorite for gatherings and celebrations. This dish is not only delicious but also brings warmth and joy to any table, making it a perfect addition to your holiday feast.

Cook with confidence

Cook's notes

For the best texture, ensure the sweet potatoes are cooked until fork-tender before mashing, which usually takes about 20-25 minutes of boiling. The casserole should be baked at 350°F (175°C) until the topping is golden brown, typically around 25-30 minutes. Keep an eye on the marshmallows to prevent burning; you may want to cover the dish with foil for the first half of baking to avoid over-browning.

Substitutions

If you don't have brown sugar, you can use white sugar mixed with a little molasses to achieve a similar flavor. For a dairy-free version, substitute the unsalted butter with coconut oil and the milk with almond or oat milk. Chopped walnuts can replace pecans if you prefer a different nut flavor.

Storage & leftovers

Leftover sweet potato casserole can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, cover the dish with foil and warm it in a 350°F (175°C) oven until heated through, about 20 minutes. You can also microwave individual portions for convenience.

Common failures

A common failure is undercooking the sweet potatoes, which can lead to a grainy texture in the puree. Additionally, if the casserole is baked too long, the marshmallows can burn or become overly hard. Make sure to monitor the dish closely during the final baking stage.

Why these ingredients

How each main ingredient earns its place in this recipe

sweet potatoes

Sweet potatoes are the star of this dish, providing a creamy texture when mashed and a natural sweetness that balances the flavors. Their ratio in the recipe is substantial, making up the bulk of the casserole and contributing to its comforting base.
mini marshmallows

The mini marshmallows add a unique sweetness and a delightful gooey texture when baked, creating a contrast to the creamy sweet potato layer. Their presence is essential for achieving the classic sweet potato casserole topping that many expect during holiday meals.
chopped pecans

Chopped pecans provide a crunchy texture that complements the softness of the sweet potatoes, adding depth to each bite. Their nutty flavor enhances the overall taste profile of the casserole, making them a crucial component of the topping.

Preparation

Step 1 20 min

Begin by placing the cubed sweet potatoes in a large pot. Cover them with cold water and add a pinch of salt. Bring the water to a rolling boil over medium-high heat and cook the potatoes until they are completely fork-tender, which should take about 20 minutes. Once cooked, drain the sweet potatoes well and return them to the pot.
Step 2 10 min

While the sweet potatoes are still warm, add the melted butter, brown sugar, ground cinnamon, salt, and milk to the pot. Mash everything together using a potato masher or a fork until you achieve a smooth, bright orange puree. Make sure there are no lumps for a creamy texture. Once well combined, transfer this mixture to a greased baking dish, spreading it evenly with a spatula.
Step 3 5 min

Preheat your oven to 375°F (190°C). While the oven is heating, sprinkle the chopped pecans and mini marshmallows evenly over the sweet potato base in the baking dish. Make sure to cover the surface well for a delicious topping, ensuring that every bite has a bit of crunch and sweetness.
Step 4 15 min

Once the oven is preheated, place the baking dish in the oven. Bake the casserole for about 15 minutes, or until the marshmallows are puffed and golden brown. Keep an eye on it to prevent burning, as oven temperatures can vary. The marshmallows should be lightly toasted for the best flavor.
Step 5

After baking, remove the casserole from the oven and let it cool for a few minutes before serving. This will allow the flavors to meld together and make it easier to serve. The casserole can be enjoyed warm or at room temperature, making it versatile for your holiday table.
Step 6

Serve the sweet potato casserole in the baking dish or transfer it to a serving platter. Garnish with additional pecans if desired. This dish pairs wonderfully with roasted meats and other holiday sides, making it a perfect addition to any festive meal.

Cook notes from readers

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