1Heat oven to 350°F (325°F for dark or nonstick pans). Generously grease and flour or spray three 8-inch or two 9-inch round cake pans.
2In large bowl, beat cake mix, gelatin, water, oil and eggs on low speed 30 seconds, then on medium speed 2 minutes, scraping bowl occasionally. Pour into pans.
3Bake 24 to 31 minutes or until toothpick inserted in center comes out clean. Cool 10 minutes; remove from pans. Cool completely, about 1 hour.
4Fill layers and frost side and top of cake with frosting. Sprinkle coconut over top and side. Store loosely covered.