Preparation
Preheat oven to 350 degrees. Mix flour, brown sugar and oatmeal together in a bowl. Peel and cut the apples. Place apples in a cake pan. Sprinkle the apples with white sugar and cinnamon. Put oatmeal mixture on top of apples; place thin slices of butter on top. Bake for 40-45 minutes until apples are soft.