Preheat your oven to 350°F (175°C). Boil the sweet potatoes in a large pot of water until tender (about 15-20 minutes). Drain well and return them to the pot.
3
Mash the Sweet Potatoes
4
Add butter, brown sugar, granulated sugar, milk, vanilla extract, cinnamon, nutmeg, and salt to the sweet potatoes. Mash until smooth and well-combined.
5
Assemble the Casserole
6
Spread the mashed sweet potato mixture evenly into a greased 9x13-inch baking dish.
7
Add the Topping
8
Sprinkle the mini marshmallows and chopped pecans evenly over the top.
9
In a small bowl, mix the brown sugar and melted butter, then drizzle over the marshmallows and pecans.
10
Bake the Casserole
11
Bake for 20-25 minutes or until the marshmallows are golden and the casserole is bubbly.
12
Serve and Enjoy
13
Serve warm as a side dish, allowing the sweet flavors and gooey topping to shine.