Celebakes White Premium Cake Mix - Ingredients Needed: 1 package of mix, 1 1/3 cup water, 1/3 cup vegetable oil. Directions on Package: Preheat oven to 325º F (163º C). Grease and flour baking pan. Mix ingredients together for 1 minute or until well blended. Bake for 30-35 minutes. Note: Baking times vary with ovens. Pan sizes: 9" x 13" or 2-(8" or 9")