3. Make the Crumb Topping In a separate bowl, I mix together the oats, flour, and brown sugar. Then I add the cold butter pieces and use a pastry cutter (or just my fingers) to blend everything ...

In a large bowl, combine the flour, brown sugar, oats and butter; set aside 1 cup for topping. Press remaining crumb mixture into an ungreased 9-in. pie plate; set aside. For filling, combine the ...