Preheat oven to 400 degrees.
Butter crunch:
Combine ingredients of the butter crunch in a mixing bowl.
Spread one half over bottom of 8 by 8- inch baking pan.
Bake until light brown, about 15 minutes.
Apple mixture:
Peel, core and slice apples. In a large mixing bowl, combine apples,
brown sugar, flour, cinnamon and melted butter.
Spoon apple mixture over butter crunch .
Bake at 350 degrees until apples are cooked and tender.
Sprinkle remaining crunch on top. Bake to brown topping, about 10 minutes.
Serve at room temperature.