Combine first 4 ingredients; pour into greased 8 x 8 baking pan. In a separate bowl, combine AA Cake Mix, butter, yogurt and milk. Batter will be lumpy. Spread cake batter over berries; covering completely. Bake at 350° for 55-60 minutes. Invert cake onto serving platter. Cut into squares; serve warm with a scoop of vanilla ice cream or whipped cream. Makes 8-10 servings.