Greek Apple Cake

Bottom layer:
- 4 cups flour
- 1 cup oatmeal
- 1 cup brown sugar
- 2 cups butter
4 lbs apples, peeled, cored, and sliced
Sauce:
- 2 tbsp cornstarch
- 1 tsp cinnamon
- 1.5 cups sugar
- 2 cups water

Heat oven to 325°F
Mix all bottom layer ingredients together using a pastry cutter or food processor. Be careful not to overwork
Reserve 1.5 cups for topping, and press remaining mixture into a 9x13 pan
Spread apples over bottom layer
Mix sauce ingredients well and boil for a few minutes
Pour sauce over apples
Top pan with reserved topping
Bake for 90 minutes