Ingredients
2 cups all-purpose flour
1/2 cup sugar
1 tablespoon baking powder
1/2 teaspoon salt
2 eggs
1/4 cup vegetable oil
3/4 cup milk
2 heaping cups of blackberries (fresh or frozen)
Topping Ingredients
1/3 cup all-purpose flour
1/3 cup brown sugar
1/4 cup softened butter
1 teaspoon cinnamon