– 1 box vanilla cake mix, dry – 1 (3.4 ounce) box Jello instant vanilla pudding mix, dry – 1 cup sour cream – 1/2 cup melted butter, cooled down a bit – 2 tablespoons vegetable oil – 1/3 cup milk – 4 large eggs – 2 teaspoons vanilla extract – 2-3 cups frozen mixed berries, cut up any large berries and measure after the berries have been cut up – 1/4 cup brown sugar