“7-Up or Sprite is the secret ingredient that takes this cake to another level, do not allow the soda to go flat pour right from the bottle or can --- this cake bakes out beautiful with no dark over cooked edges --- I recommend to use diet soda regular is too sweet but regular will work fine also ---this also may be baked in two 8-inch round cake pans and it makes the perfect wedding cake!”

Ingredients Nutrition

  • 1 (18 ounce) packagemoist deluxe white cake mix (such as Duncan Hines Moist Deluxe Classic White Cake Mix)
  • 13 cup diet lemon-lime soda (such as diet 7-Up or Sprite)
  • 13 cup vegetable oil
  • 4 large egg whites
  • 1 cup sour cream


  1. Set oven to 350 degrees F (set oven rack to second-lowest position).
  2. Mix all ingredients in a bowl on low speed until blended (about 30 seconds).
  3. Beat at medium speed for 2 minutes more.
  4. Pour the batter into a greased 13 x 9-inch baking pan (the batter will be quite thick so you will need to spread out with back of a spoon).
  5. Bake for about 30 minutes or until cake tests done.

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