From allrecipes.com
Ingredients
½ cup butter
½ cup sugar
¼ tsp salt
1 tsp vanilla extract
2 eggs, separated
1 ½ cups all-purpose flour
1 tsp baking powder
1/3 cup milk
¼ cup sugar
1 ½ cups fresh blueberries
1 Tbl all-purpose flour
1 Tbl sugar
Directions
Preheat oven to 350 degrees. Grease and flour an 8 x 8 pan. Cream butter and ½ cup sugar until fluffy. Add salt and vanilla. Separate the eggs and reserve the whites. Add egg yolks to the sugar mixture. Beat until creamy. Combine 1 ½ cups flour and baking powder. Add alternately with milk to the egg yolk mixture. Coat berries with 1 Tbl flour and add to batter. In a separate bowl, beat the whites until soft peaks form. Add ¼ cup of sugar, 1 Tbl at a time, and beat until stiff peaks form. Fold egg whites into batter. Pour into prepared pan. Sprinkle the top with remaining 1 Tbl sugar. Bake for 50 minutes.