3 root beer float cake root beer frosting Recipes

white cake mix (betty crocker supermoist preferred), root beer (1 1/2 cups), vegetable oil, egg whites, root beer concentrate (or flavored syup) or 1 tsp root beer flavored syrup (or flavored syup), vanilla frosting (betty crocker rich & creamy preferred), crushed root beer flavored hard candies (about 10)

white cake mix, root beer, vegetable oil, eggs, vanilla extract, vanilla frosting, root beer barrel hard candies, crushed