3 blackberry coffee cake topping Recipes

butter, for coating the pan, all-purpose flour, granulated sugar, brown sugar, ground cinnamon, cold unsalted butter, all-purpose flour, baking powder, ground ginger, salt, cold unsalted butter, granulated sugar, egg, vanilla, milk, frozen blackberries (from 1 10-oz package)

streusel topping, butter, softened, granulated sugar, eggs, all-purpose flour, baking powder, salt, milk, vanilla extract, peeled and sliced fresh firm, ripe peaches (about 2 large peaches, 7 oz. each), fresh blackberries, powdered sugar, garnishes: fresh blackberries , sliced peaches