Blueberry Cake

Directions

1. 1
   Cream butter and sugar together until well blended.
2. 2
   Beat egg yolks and add the flour alternately with the milk, then fold in stiffly beaten egg whites.
3. 3
   Pour half batter into a greased oblong pan.
4. 4
   Cover with floured blueberries, then with the remaining batter.
5. 5
   Bake in oven at 350° for 35 minutes.
6. 6
   Sprinkle top with powdered sugar while warm and cut in 2-inch squares.