whipped topping (optional) or ice cream (optional)
In a small saucepan, melt 2 tablespoons butter;stir in brown sugar. Spread into an ungreased 8"baking pan.
Arrange blueberries in a single layer over brown sugar mixture;set aside.
In a large bowl, cream remainaing butter and sugar until light and fluffy. beat in egg and vanjlla.
combine flour and baking powder; add to creamed mixture alternately with milk, beating well after each addition.
Carefully pour over blueberries. Bake at 350F for 40-45 minutes or until toothpick inserted comes out clean.Immediately invert onto a serving platter. cool. serve with whipped topping or ice cream if desired.
NOTE: frozen blueberries can be used,do not thaw before adding to batter.