INGREDIENTS
8
medium sweet potatoes
1/3 cup
unsalted butter, cut in ½-inch cubes
1/2 cup
milk
1 tsp
ground cinnamon
1/2 tsp
ground nutmeg
kosher salt and freshly ground pepper
1
egg, lightly beaten
1 cup
mini marshmallows
Special Equipment
Pastry bag and large star tip (optional)