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How to Make a Lego Cake

Updated July 20, 2017

Making a special cake for someone can seem like a nearly impossible task at times, especially considering all the advanced techniques and supplies that are needed to make a real masterpiece. Making a great looking cake does not have to be complicated though. Lego cakes are simple to make, whatever your age, and will please any Lego lover.

Bake a sheet cake as directed. Allow it to cool completely.

Place the cake in the freezer or refrigerator for approximately 1 hour.

Separate icing into four bowls. Colour one cup of icing yellow, colour one cup red, 2/3 cup blue and leave the rest white.

Use a knife to make the top of the cake level. Lay it cut-side down on a cake plate.

Lay the cake horizontally in front of you, and then cut it into thirds with vertical cuts. Make two squares out of one of the rectangles by cutting it in half.

Spread a crumb coat, or light layer of icing on the tops and sides of the pieces as follows: Cover one rectangle with red frosting and one with yellow. Cover one square with blue frosting and the remaining square with white.

Allow the icing to set by placing the cake pieces in the refrigerator for 30 minutes to one hour.

Frost the pieces with the remaining frosting.

Gather the marshmallow halves. Frost eight in red, eight in yellow, four in white and four in blue.

Place the frosted marshmallow halves on their corresponding cakes. For example, the red marshmallows go on the red cake in a square pattern, and so on.

Tip

Use clean scissors to cut the marshmallows in two. Frosting the marshmallows is easier if you poke them with a fork to secure them while frosting.

Things You'll Need

  • Sheet cake
  • Icing
  • Four bowls
  • Red food colouring
  • Yellow food colouring
  • Blue food colouring
  • Knife
  • Cake plate
  • Marshmallows, cut in half
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About the Author

Jennifer Hayden has been writing professionally since January 2006. Her work as a featured writer can be seen at Babycenter.com. She enjoys writing about parenting, travel, fashion, health and popular culture. Hayden received her B.A. in sociology from the University of Missouri-Columbia.