Apple Crunch

6 large sour baking apples
1 c. white sugar
1 c. brown sugar
1 stick margarine
1 c. flour
Line pan with slices of apples. Pour white sugar over them. Cream brown sugar and butter. Add to them flour to make a dough. Drop over top of apples. Cook 30 to 40 minutes in slow oven. Serves 16-20.