The recipe ingredients consists of 1-1/2 sticks butter or margarine, 2 cups all purpose flour, 2 cups sugar, 4 teaspoons baking powder, 1 teaspoon salt, 2 cups milk, 2 teaspoons vanilla extract and 4- ½ cups frozen blackberries.
Preheat oven to 375 degrees . While the oven is pre-heating add sticks of butter to a 13x9x2 baking pan and place into the oven to allow butter to melt. Remove pan from oven when butter has melted. Sift together flour, sugar, baking powder and salt into a large mixing bowl, add milk and vanilla extract the dry mixture and mix well.
Once butter has melted evenly distribute the blackberries into the bottom of your baking dish. Pour cobbler batter evenly over the blackberries. Place baking dish in oven and bake for 45 minutes to 1 hour until done. When done crust will become golden brown. Serve warm or with a scoop of Vanilla Ice Cream.