Mix everything together, except the pie filling. Reserve 1 cup of the crumb mixture for topping. Pat into a 9x13x2" casserole dish that has been sprayed with a non-fat cooking spray. Pour can of pie filling on top og crumb mixture. Sprinkle the rest of crumb mixture (1 cup) on top of pie filling. Bake 45 minutes for 1 hour in a slow oven. 300~F. Serve warm with vanilla ono-fat yogurt or Dream Whip.
Sprinkle Grape-Nuts cereal on top, if desired. Serves 8-12 Per serving: Fat: 0.37g; Calories: 105; Protein: 3.2g; Cholesterol: 0mg; Carbohydrate: 14.3g: Sodium: 63mg.