3/4 c. sugar
1/4 c. butter
1 egg
2 tsp. baking powder
2 c. flour
1/2 c. milk
1 tsp. vanilla
2 c. blueberries

Mix sugar and butter until creamy. Add egg and mix well. Add dry ingredients along with milk and vanilla. Fold in blueberries. Spread into a 9 x 13 inch pan. Sprinkle topping mixture of 1/2 cup sugar, 1/3 cup flour, 1 teaspoon cinnamon and 1/4 cup butter over cake. Bake 40 minutes at 350 degrees.