Crumb Slices - cooking recipe

Ingredients

1 yellow cake mix
1/2 c. butter or margarine
1/4 c. brown sugar
1/2 tsp. cinnamon
1 c. sour cream
1 egg
fresh blueberries

Preparation

Cream together cake mix and butter or margarine and put 2/3 cup aside for topping.
Add cinnamon and brown sugar to reserved topping.
Press remaining crumb mixture into 9 x 13-inch pan. Spread with fresh blueberries, then beat sour cream and egg together.
Pour over fruit.
Then top with the reserved topping. Bake at 350\u00b0 for 25 minutes.