Cream butter and sugar; add eggs ... mixture, alternating with sour cream, ending with flour mixture. ... minutes or until cake tests done. Cool in pan ... cut into 12 pieces.
Preheat oven to 375 degrees. Grease 8-9 inch round cake or pie pan. Rinse blueberries ... dry muffin mix, sour cream, milk and egg in ... Spread 1/2 of blueberry mixture on top of batter. ... cake. Serves 9 people.