Preheat oven to 350 degrees.

In a mixing bowl, combine flour and sugar.

Cut in butter until crumbly, and set aside 3/4 cup for topping.

Add the baking powder, milk,extract and egg yolks and mix well.

Beat egg whites until soft peaks form and fold into batter.

Pour into a greased 13x9 baking dish.

Sprinkle on blueberries and the reserved crumb mix.

Bake 30-40 minutes or until golden brown.

Delicious for breakfast or dessert!

ENJOY!