2 cups all-purpose flour
1 1 2 cups sugar
1/2 cup cold butter
1 tsp baking powder
1 cup milk
2 eggs, separated
2 cups fresh or frozen blueberries
In mixing bowl, combine the flour and sugar. Cut in butter until crumbly; set aside 3/4 cup for topping.
Add baking powder, milk, and egg yolks to remaining mixture, mix well.
Beat egg whites until soft peaks form; fold into batter. Pour into a greased 9x13-inch pan or dish. Sprinkle with the blueberries and the reserved crumb mixture. Bake at 350 degrees 30-35 minutes or a toothpick inserted in centeredness out clean.