Here is a recipe:
Ingredients:
1 cup of flour
1 cup of brown sugar
1 cup of oats
1 cup of butter
Mix together. It works best if you use your hands. Pinch ingredients together until it is crumbly.
4 to 5 apples peeled and sliced
1/2 cup sugar
1/4 tsp salt
1 tsp cinnamon
Put apples in large pan and sprinkle with sugar, salt, cinnamon, then the crumble mixture. Bake at 350 for about 35 minutes or until golden brown.