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“From Pillsbury Super Moist Cake Mix Recipes. This looks really good. It says for a fun soda fountain touch, insert half of a plastic straw into each piece of cake.”
1 cake

Ingredients Nutrition

  • 1 (18 ounce) box white cake mix (Betty Crocker Supermoist preferred)
  • 1 (12 ounce) can root beer (1 1/2 cups)
  • 14 cup vegetable oil
  • 3 egg whites
  • 1 teaspoon root beer concentrate (or flavored syup) or 1 teaspoon root beer flavored syrup (or flavored syup)
  • 1 (1 lb) container vanilla frosting (Betty Crocker Rich & Creamy preferred)
  • 12 cup crushed root beer flavored hard candies (about 10)


  1. Heat oven to 350F (325 for dark or nonstick pan).
  2. Spray bottom only of 13 x 9-inch baking spray with flour. (For maximum cake height, keep baking spray off the sides of the pan. The cake will climb the sides of the pan better.
  3. In large bowl, beat cake mix, root beer, oil and egg whites with electric mixer on low speed 30 seconds.
  4. Beat on medium speed 2 minutes, scraping bowl occasionally.
  5. Pour into prepared pan.
  6. Bake 28 to 36 minutes or until toothpick inserted in center come out clean.
  7. Cool completely, about 1 hour.
  8. Stir root beer concentrate into frosting.
  9. Spread over cake just before serving, sprinkle with crushed candies.
  10. Candies will begin to melt if sprinkled on frosting for longer than 1 to 3 hours.

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