2 cans sweet potatoes
1 can crushed pineapple
1/4 stick butter
Sugar to taste
Lg. marshmallows

Drain sweet potatoes. Heat and mash. Add butter, sugar and drained pineapple. Spread in a 13x9 glass baking dish. Place large marshmallows on top. Bake at 450 degrees until marshmallows melt and are golden brown on top.