In an 8-inch square baking ... all ingredients for cake batter are mixed. Pour batter ... if desired. • Rhubarb: Increase sugar to 3/4 ... C, 10.71IU Vitamin D.
Preheat oven to 350°F. Prepare cake mix according to package directions. Set aside. Place chopped rhubarb in bottom of 9x13-inch pan. ... to cool before serving.