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How to make a 10-foot Cake - The Recipes, the math, the process

How to make a 10-foot Cake - The Recipes, the math, the process

When I say baking projects, this is what I mean by baking *projects*

Allison Chen's avatar
Allison Chen
Feb 22, 2025
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How to make a 10-foot Cake - The Recipes, the math, the process
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Post-grad I started feeling more responsible, so I decided I need to make something big, or stupid, or perhaps stupid big. So I had this thought to make a really long cake. A cake long enough that I could lay down next to it.

I missed baking for other people. In part, this idea was fueled by the Internet’s obsession with large sized foods. I too wanted to dip my toe and witness something large for the sake of being large. But also, since graduating

I kept this idea in my back pocket for months, jokingly telling people that I wanted to make something huge. So when Beacons approached me to host a creator event for them, I agreed on the condition that I could make my cake baking dreams come true. I I wanted to be ambitious but honestly I wasn’t really thinking about the logistics of making something 10 feet long until they decided to heavily advertise that that was the case. So now, I was locked in to baking this monstrosity, so here’s how I went about planning it.

The Math and the Cake Flavors:

So I decided to make the cake by combining half sheet trays and laying them side by side. Each half sheet tray is 13” x 18” which means to get to 10 feet (120 inches) we’ll need a little over 6 half sheet trays of length, so I rounded up to 7 (she can’t be shorter than 10 feet). I’ll stack the 3 layers of cake on top of one another with 2 layers of filling in between. To add more variety and to encourage people to eat more cake I decided on three flavors.
Considering how much surface area this cake had, I knew it would be a challenge to decorate, so I just decided to not decorate it at all! To make the cake the center of the party, the Beacons team and I purchased a ton of decorations to so that way guests could decorate the cake themselves and so that way I didn’t have to do extra planning. Don’t worry, we also bought gloves so that way it was a bit more sanitary.

So in total I’ll be making 21 batches of cake, and three different flavor combos…

  • Red Velvet Cake

    • Brown Butter Cream Cheese Frosting

    • Red Fruit Jam

  • Funfetti Cake

    • Vanilla Mousseline filling

    • Funfetti cookie crumbles

  • Chocolate cake

    • Whipped malted chocolate ganache

    • Biscoff cookie crumbles

Then we’re going to cover the entire thing in buttercream icing so it looks like one continuous cake.

So this is the monstrosity of a task I’ve made for myself.

Ingredients/Grocery List/Recipe links

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