Royal Blue Velvet Cake

Royal Blue Velvet Cake
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  1. Cake
  2. 1 box Betty Crocker® SuperMoist® white cake mix
  3. 1 1/4 cups buttermilk
  4. 1/3 cup vegetable oil
  5. 3 eggs
  6. 1 tablespoon unsweetened baking cocoa
  7. 2 teaspoons royal blue paste food color
  8. 1 toothpickful violet paste food color
  9. Frosting
  10. 1 jar (7 oz) marshmallow creme
  11. 1 cup butter or margarine, softened
  12. 2 1/2 cups powdered sugar
  13. 1/8 teaspoon salt
  1. 1Heat oven to 325°F. Grease and lightly flour bottoms and sides of three 8-inch round cake pans, or spray with baking spray with flour.
  2. 2In large bowl, beat cake ingredients with electric mixer on low speed about 30 seconds, then on medium speed 2 minutes, scraping bowl occasionally.
  3. 3Divide batter evenly among pans. Bake 22 to 27 minutes or until top springs back when lightly touched in center. Cool 15 minutes. Remove from pans; cool completely.
  4. 4Spoon marshmallow creme into large microwavable bowl; microwave uncovered on High 15 to 20 seconds to soften. Add butter. Beat with electric mixer on medium speed until smooth. Beat in powdered sugar and salt until smooth.
  5. 5If necessary, trim rounded tops of 2 cake layers to flatten before assembling. Place 1 cake layer, top side down, on serving plate; spread with about 1/3 cup frosting. Top with second layer, top side down; spread with about 1/3 cup frosting. Top with untrimmed cake layer, top side up. Frost side and top of cake with remaining frosting. Store loosely covered.