Sweet Potato Casserole

2 large cans sweet potatoes

1/2 cup oatmeal

1/2 cup flour

1/2 cup brown sugar

1/2 bag fresh cranberries

1/4 cup butter or margarine

Marshmallows

Preheat oven to 350 degrees.  Drain sweet potatoes and put in a 2 1/2 quart casserole.  In small bowl mix, flour, oatmeal and brown sugar.  Pour this and the cranberries over the potatoes and mix together carefully.  Dot with margarine.  Bake for about 35 to 40 minutes.  After baking, cover with marshmallows and put under broiler until marshmallows are slightly browned, about 5 minutes.