Strawberry Margarita Cake

3/4 cup bottled strawberry flavored nonalcoholic margarita drink mix
1 package white cake mix
1/3 cup vegetable oil
3 egg whites
1 tablespoon grated lime peel
1- 8 ounce container frozen whipped topping, thawed
Strawberries

Heat oven to 350 degrees. Grease bottom only of a 9×13 pan. Add enough water to drink mix to measure 1 1/4 cups. Beat cake mix, dink mix, oil and egg whites in large bowl with electric mixer on low speed for 2 minutes.

Pour into pan. Bake 28 to 33 minutes or until pick inserted in center comes out clean. Cool completely, about 1 hour. Gently stir lime peel into whipped topping, spread on cake. Garnish with strawberries.

Store in refrigerator.