1/2 cup butter
2 cups flour
2 cups sugar
3 tsp baking powder
1 tsp salt
2 cups milk
1 tsp vanilla
4 cups blackberries (tossed with a little sugar)
Preheat oven to 350. Once oven temp is reached, melt butter in 9x13 pan.
Stir together the flour, sugar, baking powder, salt, milk and vanilla; batter will be slightly lumpy. Pour half of batter on top of melted butter in pan. Spread blackberries over batter and pour remaining batter over the berries.
Bake in preheated oven for one hour or until golden brown.