Preheat oven to 375 degrees. Combine and put in greased casserole:

3 c. sliced or chopped apples
1 tbsp. flour
1/4 c. sugar
1 tsp. cinnamon
1/8 tsp. salt
1 tbsp. water

Cut together with pastry blender:

1/2 c. rolled oats
1/4 tsp. salt
1/4 c. butter
1/3 c. brown sugar

Sprinkle on top of casserole mixture. Bake 35 minutes.

Option: Add 1/4 cup peanut butter to rolled oats mixture. Reduce butter to 2 tablespoons.