Filling:
4 cups blackberries
Topping:
1/2 cup flour
1/2 cup brown sugar
1/2 cup quick cooking oats
4 T vegetable oil
1/2 tsp. cinnamon
1/2 tsp. Allspice
Preheat oven to 350°. Turn blackberries into a greased 8×8-inch baking dish. Set aside.
Mix together all of the topping ingredients until crumbly. Sprinkle over blackberries. Bake for 30 minutes or until blackberry filling is bubbly and topping is golden brown.