Cake:

1 stick butter
1 c. sugar
2 eggs
2 tsp. vanilla
2 c. flour
2 tsp. baking powder
1/2 tsp. salt
2/3 c. milk
blueberries

Crumb Topping:

1 stick butter
1 c. sugar
2/3 c. flour
1 tsp. cinnamon

Set oven at 375°F. Butter and flour 9 x 13-inch cake pan. Mix up cake batter and place in the pan. Sprinkle top with blueberries.

Make Crumb Topping in another bowl and sprinkle on top of the blueberries.

Bake for 40 minutes or until done to the touch.