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Published on July 15, 2021 by · This post may contain affiliate links ·

Roblox Floating Cube Cake

Skill level: Intermediate

My best friend's daughter is really into the video game Roblox and for her birthday I created this floating cube cake to surprise her. In this tutorial, you will learn how to create a gravity-defying cake cube made with no big support pieces, everything is edible!

You will also learn my tips and tricks for getting sharp edges on cube shapes, how to add this splashy galaxy effect to the cake board and how to create the game avatar portrait.

56:37 Minutes of Instruction

What You Will Learn

  • How to create a gravity-defying Cube made from edible ingredients
  • Learn how to create a beautiful galaxy design on the cake board
  • How to create the portrait of the game character avatar

Tutorial Chapters

  1. Making the square template 0:29
  2. Preparing the acrylics 2:45
  3. Frosting the cake 4:55
  4. Carving the cake 15:12
  5. Building the structure 17:08
  6. Frosting the base cake 20:05
  7. Making the chocolate base 22:40
  8. Decorating the cake board 29:18
  9. Stacking the triangles 31:46
  10. Stacking the cube 33:42
  11. Paneling the cube 40:46
  12. Adding edible images 42:41
  13. Making the avatar decoration 44:32
  14. Painting the cake 49:53

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About Liz Marek

Liz Marek is a professional cake artist and recipe developer who has been teaching baking and cake decorating since 2008. She founded Artisan Cake Company in Portland, Oregon in 2009 and now runs Sugar Geek Show, where she publishes kitchen-tested recipes, food science explanations, and step-by-step tutorials.

Liz is best known for sculpted and hyperrealistic cakes. She won Netflix's Is It Cake? Holiday 2 in 2025 with a hyperrealistic Santa cake, and has competed on and won Food Network cake competitions. Cake Masters Magazine named her one of the top 10 cake artists in 2017. She is the author of Artisan Cake Company's Visual Guide to Cake Decorating and a graduate of the Oregon Culinary Institute.

Her focus is on explaining not just how a recipe works but why it works, so bakers can troubleshoot instead of guess. Every recipe on this site is tested before it's published.

Liz teaches full-length cake tutorials, including sculpted and hyperrealistic cakes, at Sugar Geek University.