3 lb (1.4 kg) sweet potatoes (about 4 medium) 1 / 3 cup (70 g) brown sugar 4 tbsp (60 g) unsalted butter, softened 1 / 4 cup (60 ml) milk 1 large egg, lightly beaten 1 tsp (5 ml) vanilla extract 1 / 2 tsp ground cinnamon Pinch of salt 2 cups (140 g) mini marshmallows
1. Preheat oven to 375°F (190°C). Bake or boil sweet potatoes until very tender; peel and mash until smooth. 2. Stir brown sugar, butter, milk, egg, vanilla, cinnamon, and salt into the mashed sweet potatoes until well combined. 3. Spread the mixture into a greased 9x13-inch baking dish and smooth the top. 4. Bake uncovered for 20 minutes to set. Remove from oven and sprinkle marshmallows evenly over the top. 5. Return to oven and bake 5–7 minutes more, or broil briefly until marshmallows are golden brown. Serve immediately.
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