Creamy sweet potatoes topped with a loaded & crumbly topping! Loaded sweet potato casserole has a base of sweet potato topped with a crumble of marshmallows, pecans, and coconut! Everyone's favorite classic sweet potato casserole toppings all in one dish.
Add the sugar, butter pieces, and milk into the bottom of a large mixing bowl. Dump the drained and hot sweet potatoes on top. Use a handheld blender to beat the mixture until creamy and smooth.
Make the crumble topping: In a small mixing bowl, stir together the flour and brown sugar. Add butter pieces and mix together with a pastry blender or your hands (hands are easier) until mixture resembles wet, coarse crumbs. Add pecans, coconut, and marshmallows. Stir together to combine. Sprinkle over the sweet potatoes.
Bake for 35-40 minutes. The top should be golden brown and edges bubbly.