Ingredients
For the Sweet Potato Base:
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4 cups mashed sweet potatoes (about 4 large sweet potatoes)
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1/2 cup granulated sugar
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2 large eggs
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1/2 cup whole milk
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1/4 cup unsalted butter, melted
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1 tsp vanilla extract
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1/2 tsp ground cinnamon
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1/4 tsp ground nutmeg
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Pinch of salt
For the Topping:
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2–3 cups mini marshmallows
Instructions
1. Prepare the Sweet Potatoes:
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Preheat oven to 350°F (175°C).
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Peel and chop sweet potatoes. Boil in salted water for 15–20 minutes or until very soft.
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Drain well and mash until smooth. You’ll need about 4 cups mashed.
2. Make the Filling:
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In a large bowl, mix mashed sweet potatoes with sugar, eggs, milk, melted butter, vanilla, cinnamon, nutmeg, and salt.
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Beat until smooth and well combined.
3. Assemble the Casserole:
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Pour the sweet potato mixture into a greased 9×13-inch baking dish.
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Bake for 25–30 minutes, or until the filling is set and slightly puffed.
4. Add Marshmallow Topping:
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Remove casserole from oven and scatter mini marshmallows evenly on top.
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Return to the oven and bake an additional 10–15 minutes, or until marshmallows are golden and gooey.