Step 1
Heat oven to 350°F. Spray bottom only of 13x9-inch pan with baking spray with flour (do not use dark or nonstick pan). In large bowl, beat cake mix, margarita mix, oil, water, lime peel, eggs and 1 cup of the diced mango with electric mixer on low speed 30 seconds, then on medium speed 2 minutes, scraping bowl occasionally. Pour into pan.