3 tbsp. flour
1/2 - 2/3 c. sugar
3 1/2 c. blackberries
1/2 stick soft butter
1/2 c. flour
1 c. oatmeal
1/2 c. brown sugar, loosely packed

Mix sugar, flour, berries - place in greased 9 x 9 inch pan. Bake at 400 degrees for 15 minutes - stirring twice. Meanwhile, mix butter and flour. Stir in oatmeal and brown sugar. Put over top of berry mixture and bake at 400 degrees another 15 minutes.