Hamburger Birthday Cake Design

by Karen Tack

Hamburger Birthday Cake Design

How to make a hamburger birthday cake with Cocoa Krispie treats


Serves 18




  • 2 cups mini-marshmallows
  • ¾ cup chocolate chips
  • 3 tablespoons butter
  • 5 cups cocoa rice cereal
  • 2 (9-inch) round cakes
  • 1 can (16 ounces) vanilla frosting
  • ½ tsp cocoa powder
  • Yellow food coloring
  • 10 spearmint leaves
  • 1/2 cup sugar
  • 8 orange fruit slices
  • ½ cup orange decorating sugar
  • 1 tube (4.25 oz) yellow decorating frosting
  • 2 tablespoons pine nuts


What you’ll need:


  • A serving platter
  • A bread knife
  • A large, microwave-proof bowl
  • Waxed paper
  • Scissors or a paring knife


Preparing the “patty” and cake:


  1. Melt the marshmallows, chocolate chips and butter in a large microwave proof bowl in the microwave for about 45 seconds or until smooth.
  2. Stir in the cocoa rice cereal to coat completely.
  3. With greased hands, shape into an 8-inch hamburger patty shape and place on a sheet of waxed paper.
  4. Trim the top of one of the cakes to make level and use as the hamburger’s bottom bun.
  5. Transfer the trimmed cake to a serving platter.


Preparing the decorations:


  1. Cut the spearmint leaves in half. Sprinkle a work surface with some of the sugar and roll out the spearmint pieces to flatten to 1/8-inch thickness. Pinch one end of the flattened spearmint leaves to create the lettuce leaves. Repeat with the remaining spearmint leaves and sugar.
  2. Press 2 of the orange fruit slices together. Sprinkle the work surface with the orange decorating sugar and roll out the fruit slices to a 3-inch square, adding more orange sugar to prevent sticking,. Repeat with the remaining fruit slices. Trim each orange piece with scissors or a paring knife to simulate the corners of a square slice of cheese.


Frosting the cake:


  1. Add a few drops of yellow food coloring and the cocoa powder to the vanilla frosting to tint it a pale beige.
  2. Spread some of the beige frosting over the sides and top of the trimmed cake layer on the platter and make smooth.


To complete the decoration:


  1. Cover the edge of the bottom “bun” of the cake with spearmint leaf pieces for the hamburger’s lettuce leaves.
  2. Place the chocolate rice hamburger patty on top.
  3. Arrange the orange fruit slices as the cheese and let them hang over the burger slightly.
  4. Pipe the yellow frosting over the cheese in a wavy line across the top for the hamburger’s mustard.
  5. Place the remaining cake layer on top. Spread the top with the remaining beige frosting and make smooth.
  6. Sprinkle the top with the pine nuts.


Cake Anatomy:


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