Bake 5-6 sweet potatoes (peeled and diced) at 350 for 45-60 minutes in a casserole dish (or microwave them till they're tender)
Mix
1 cup of pineapple juice
1 cup of brown sugar
1/4 cup butter
1 1/2 Tablespoon Cornstarch
Bring sauce to a boil and pour over potatoes. Serve. (maybe even as dessert!)