1 quart (4 cups) blackberries, or other fruit or pie filling.
Instructions
Layer blackberries into bottom of an 8×8 cake pan.
Melt butter. Mix in cake mix and vanilla. Stir until well mixed. Mixture should be quite crumbly. if it’s not, add a little more cake mix until it is.
Sprinkle topping mixture onto the fruit.
Bake at 350º for 20-30 minutes or until nicely browned on top.