1/4 cup light brown sugar
1/2 cup all purpose flour
2 tbsp. unsalted butter
1/4 tsp. cinnamon
1/4 cup chopped walnuts (optional)

Mix ingredients together with a fork. Mixture will be lumpy and crumbly. Liberally sprinkle on top of any unbaked fruit pie instead of pastry topping. Bake at 450 degrees for 15 minutes; reduce oven temperature to 350 degrees and bake an additional 50 minutes. Let pie cool before serving.