Ingredients

  • 1 (18 1/4 ounce) white cake mix (the recipe called for Betty Crocker Super Moist white cake mix)
  • 1 14 cups warm water
  • 13 cup vegetable oil
  • 3 egg whites
  • red food coloring
  • blue food coloring
  • 1 (12 ounce) container white frosting (the recipe called for Betty Crocker Whipped frosting)
  • red food coloring
  • blue food coloring

Method

  • Heat oven to 325.
  • Generously grease a 12 cup fluted tube cake pan.
  • Combine cake mix, water, vegetable oil and egg whites according to cake mix package directions.
  • Pour 1 cup of batter into a separate bowl.
  • Gradually add red food color a few drops at a time and mix thoroughly until it is a nice, red color.
  • Pour 1 cup of batter into a separate bowl.
  • Gradually add blue food color a few drops at a time and mix thoroughly until it is a nice, blue color.
  • Pour red cake batter into bottom of pan.
  • Carefully pour remaining white batter over red batter in pan.
  • Carefully pour blue batter over white batter.
  • (Blue batter does not need to cover white batter completely; it looks better if it just forms a ring in the center of the white batter.
  • ).
  • Bake as directed on box or until toothpick inserted near center comes out clean.
  • Remove from oven and cool cake for 5 minutes.
  • Meanwhile, place cooling rack over cookie sheet.
  • Turn pan upside down so cake winds up on the cooling rack.
  • Cool cake completely, about 30 minutes.
  • When cake is cool, divide frosting evenly into 3 microwavable bowls.
  • Microwave 1 bowl of frosting uncovered on High a few seconds until smooth enough to drizzle over cake.
  • With spoon, drizzle all of white frosting back and forth around cake in a striping pattern.
  • Repeat microwaving second bowl of frosting until smooth.
  • Stir in a few drops blue food color until well blended.
  • Drizzle over cake, scattering frosting back and forth.
  • Repeat with remaining bowl of frosting and red food color, making sure red, white and blue frostings can be seen on cake.
  • Let cake stand at room temperature until frosting is set before serving.