With Have It Both Ways Sweet Potato Casserole everyone will be happy. Half the casserole is covered in pecan streusel and half with marshmallows. Everyone gets their favorite or they can have both.
Bake sweet potatoes in a 375 degree oven for 60 minutes or until soft. Let cool slightly and then peel skin off and discard.
Place sweet potatoes in a large bowl. Add butter, brown sugar, vanilla, salt, pumpkin pie spice, and cinnamon. Beat with a hand held mixer until smooth.
Transfer mixture to a greased 9x13-inch baking dish.
Sprinkle marshmallows on opposite corners as in the pictures..
In a bowl, cut butter into brown sugar and stir in pecans. Sprinkle mixture on areas not covered by marshmallows.
Bake at 350 degrees for 20 minutes.
Notes
The sweet potato mixture can be made up to 2 days in advance. Spread it in a baking dish and cover with plastic wrap and refrigerate. Sprinkle the topping on just before baking.