• 4 (15.5 ounce) cans mashed sweet potatoes
• 1 cup white sugar
• ½ cup butter, softened
• ½ cup milk
• 2 eggs, beaten
• 1 tablespoon ground cinnamon
• 1 teaspoon vanilla extract

Topping:

• 1 ½ cups brown sugar
• 1 cup chopped pecans
• 1 cup flaked coconut
• ½ cup butter, softened

1. Preheat oven to 350 degrees F (175 degrees C).
2. Stir mashed sweet potatoes, white sugar, 1/2 cup butter, milk, eggs, cinnamon, and vanilla together in a large bowl until smooth; transfer to a casserole dish.
3. Mix brown sugar, pecans, coconut, and 1/2 cup butter in a bowl; spread atop the filling.
4. Bake casserole in preheated oven until topping is golden brown, about 30 minutes.