8 c. sliced apples (slightly tart are best)
2/3 c. sugar
1 tsp. cinnamon
4 tbsp. butter

Arrange in bottom of baking pan.

Mix together and sprinkle over apple mixture:

1 c. flour
1 c. rolled oats
1 c. brown sugar
1/4 tsp. baking soda
1/4 tsp. baking powder
1/4 tsp. salt
1/2 c. butter

Bake in 9x13 inch pan for 350 degrees for 1 hour.