1/2 CUP butter1 CUP margarine2 CUP granulated sugar1 PIECE eggs2 TEASPOON vanilla1/4 TEASPOON baking powder2 TEASPOON salt1 CUP all-purpose flour2 1/2 CUP milk1 CUP fresh blueberries1/4 CUP frozen blueberriesNONE lemon zestNONE granulated sugarNONE ground nutmeg