Blueberry Squares

Difficulty: easy Prep Time: Five Minutes Total Time: Under an hour
3 tbsp flour
1/3 cup flour
2 egg yolks
2/3 cups flour
1 tsp baking powder
1/4 tsp salt
1/4 cup milk
1/4 tsp vanilla

Topping:
2 egg whites
6 tbsp sugar
1 cup blueberries
1/4 tsp salt

Cream butter and sugar. Beat in egg yolks. Add dry ingredients with milk and vanilla. Pour into 8" square pan and bake at 350°F for 18-20 minutes. Mix topping ingredients and beat until stiff. Spread over cake mixture and return to oven until brown. Cut into squares.