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    Home / Side Dish / Sweet Potato Casserole

    Sweet Potato Casserole

    Mashed sweet potatoes are sweetened with brown sugar and spices, then baked with a gooey, toasted marshmallow topping for a beloved holiday side.

    ⏱ 20 minPrep time
    🔥 35 minCook time
    🍽 8Servings
    🏷 Side DishCategory
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    Sweet potato casserole became a fixture of American Thanksgiving tables in the early 20th century, gaining widespread popularity after marshmallow manufacturers began promoting the sweet, gooey topping in the 1910s and 1920s. The combination of creamy sweet potatoes and toasted marshmallows has remained a beloved holiday classic ever since.

    Creamy sweet potatoes topped with toasted marshmallows

    Mashed sweet potatoes are sweetened with brown sugar and spices, then baked with a gooey, toasted marshmallow topping for a beloved holiday side.

    Step by stepInstructions

    1. Boil the sweet potatoes until fork-tender, about 20 minutes, then drain.
    2. Preheat the oven to 180°C.
    3. Mash the sweet potatoes with butter, brown sugar, milk, eggs, cinnamon, and nutmeg until smooth.
    4. Spread into a baking dish.
    5. Bake 20 minutes, then top with marshmallows and bake 10-15 more minutes until golden and toasted.
    6. Serve warm.

    💡 Chef tips & storage

    Watch the marshmallow topping closely near the end of baking, as it can go from golden to burnt quickly. This casserole can be assembled a day ahead and baked fresh before serving.

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    Recipe details

    Prep20 min
    Cook35 min
    Servings8
    CategorySide Dish
    PublishedAugust 12, 2026
    Emily — the cook behind My Comfort Recipes

    Hi, I'm Emily 🧡

    Hi, I'm Emily — the cook behind My Comfort Recipes. Simple, tested comfort food for real weeknights, written down the way grandma would. Pull up a chair. More about me →

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