One 13 x 9 inch greased pan. Fill pan 1/2 full with dewberries. Sprinkle 1/2-1 cup of sugar. Sprinkle 1 box of yellow cake mix. Pour 1 stick of melted butter over cake mix.

STREUSEL TOP:

3 tbsp. flour
3 tbsp. sugar
2 tbsp. butter

Mix. Sprinkle over berries.