1. Preheat oven to 375 degrees.

2. In a mixing bowl, add flour, sugar, cinnamon, orange marmalade; stir in peaches and toss to coat well. Place mixture into unbaked pie shell.

3. In a small bowl, combine all topping ingredients and cut in margarine with a pastry blender or two knives until mixture is crumbly. Sprinkle evenly over top of fruit in pie shell.

4. Place a baking sheet or heavy foil (shiny shine up) on oven rack; set pie atop the sheet or foil. Bake for about 40 minutes or until golden brown.

This recipe has had mileage on it.. originating from Jo Anne Merrill's original peach crumble.