1 qt. sweetened blackberries
1 c. sugar
1 c. flour
1 stick butter
3/4 to 1 c. milk

Preheat oven to 350 degrees. Melt butter in 13 x 9 inch pan. Combine sugar, flour, and milk. Pour over melted butter, then pour in berries (do not stir). Bake 1 hour.