Preheat oven to 350°F. Spray pans with vegetable pan spray.
In large bowl, combine cake mix with orange juice, oil, eggs and orange peel, following package instructions. Pour into prepared pans.
Cool 10 minutes in pan on rack; remove and cool completely before decorating.
Refer to baking chart in techniques section for baking times and temperatures for specific pans.
YIELD: Makes about 5 cups batter.