Mix together. Remove 2/3 cup and set aside.
Pat remaining mixture into a greased 13”X9” baking pan.
Bake in a 350 º F. oven for 15 minutes.
Make the filling:
Mix the remaining crumb mixture with:
Pour over the baked crust.
Bake in a 375 º F. oven for 30 to 40 minutes.