Ingredients

The following ingredients have 24 Servings
  • 1 box Betty Crocker™ Super Moist™ party rainbow chip cake mix
  • Water, vegetable oil and eggs called for on cake mix box
  • 1/2 cup butter, softened
  • 4 1/2 cups powdered sugar
  • 1 1/2 teaspoons vanilla
  • 4 to 5 tablespoons milk
  • 5 Oreo birthday cake sandwich cookies, chopped
  • 5 Oreo chocolate sandwich cookies, chopped
  • 1/2 cup teddy bear-shaped birthday cake graham snacks (from 10-oz box)
  • 1 tablespoon rainbow-colored candy sprinkles

Instruction

  • Heat oven to 350°F. Spray bottom of 15x10x1-inch pan with cooking spray.
  • In large bowl, make cake batter as directed on box. Pour into pan. Bake 20 to 25 minutes or until toothpick inserted in center comes out clean. Cool completely, about 1 hour.
  • In large bowl, mix softened butter, powdered sugar, vanilla and 4 tablespoons milk with electric mixer on medium speed until smooth and creamy. If frosting is too stiff to spread, add additional milk, 1 teaspoon at a time.
  • Spread frosting over cooled cake, and top immediately with Toppings. To serve, cut into 6 rows by 4 rows.