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Two Twenty One

Race Car Cake – A Costco Cake Hack

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How to make a half sheet race car cake for around $25– without buying or using cake decorating supplies.

When asked Owen what them he’d like for his fifth birthday party, he said “race cars”. To be sure, I asked him multiple times, but his answer never changed. I’m usually extra AF when it comes to the big birthday parties I throw for the kids, but this year I was trying to streamline somethings– mostly for my sanity and pocketbook. So I came up with the idea to hack a Costco half sheet, double layered cake that feeds 48 people. These bad boys are delicious and retail for $18.99. Did I mention they’re made with 2 pounds of vanilla cheesecake filling?

Ordering the Costco Cake

In case you didn’t know, Costco has set designs you have to choose from. There’s no “Well, I’d like a cake made to look like a race track” option.

So here’s what you’ll need to do:

• Write on the order form that you want the cake “plain (borders only)”.
• Indicate that you want the message written small in the center with the color of your choosing.

Then, you’ll need to rearrange your entire fridge so you can fit this bad boy in it because it has to be refrigerated (see cheesecake filling).

Costco cake hack

Decorating the Race Car Cake

To build the race track, you’ll need 6 Hershey’s bars. I bought the 6 count package. Break the Hershey bars into sections of 4 and 2.

You’ll also need a package of regular Oreos. Because this was my first time making a race car cake, I went with the whole package, but I probably only needed about 20 Oreos. Put the Oreos (whole, do not attempt to scrape out the white part) in a food processor and pulse until they’re turned into crumbs. If you don’t have a food processor, you can put the Oreos in a Ziploc bag, seal it, and crush the Oreos with a rolling pin or the bottom of a mug or drinking glass.

Hershey's bars and crushed Oreos

Start by putting two 4 piece sections on the top center and bottom center of the cake. Build the large race track oval out from those points. You’ll have to break some of the 2 piece sections into single sections. And you may have to grab a knife and trim a single section to fit. Do the same for the inner oval.

For the sake of consistency, point the outer oval Hershey’s bars with the writing in. Point the inner Hershey’s out so the flat part of the bar in closest to the writing.

how to make a race track cake

Grab the crushed Oreos and spoon them into the oval. Use the back of the spoon to smooth out the Oreos, creating a level race track surface. Use caution when applying the Oreos to the cake. But if you happen to get some crumbs on parts of the cake that shouldn’t have Oreos, take a knife or toothpick and pick them off. Or say “meh” and call it good enough.

crushed Oreos on cake

See how the Hershey’s pieces keep the Oreos from going everywhere?

race track cake

Place Hot Wheels cars driving counter clockwise on the race track.

Optional: Add two checkered flags.

race car cake

Voila! Race car birthday cake assembled in less than 10 minutes for around $25.

car cake

Some Notes

So the Oreos don’t get soggy, assemble the race car cake as close to party time as possible.

I crushed the Oreos and stored them in an airtight bowl the day before the party. I also broke up the Hershey’s bars the day before the party. By doing this, I was able to assemble the cake in less than 10 minutes right before we had to leave for Owen’s birthday party.

Since we have plenty of Hot Wheels cars in this house, I grabbed 6 from our private collection, cleaned them off, and used them on the cake.

race car birthday cake

5 from 4 votes
race car cake
Print
Race Car Cake
Prep Time
5 mins
Cook Time
10 mins
Total Time
15 mins
 

How to turn a half sheet cake into a race car cake with race track.

Course: Dessert
Cuisine: American
Servings: 1 half sheet cake
Ingredients
  • 1 half sheet cake
  • 6 Hershey bars
  • 1 14.3 oz package of Oreos
  • 6 Hot Wheels cars
  • 2 checkered flag picks
Instructions
  1. When ordering the cake, write on the order form that you want the cake "plain (borders only)". Indicate that you want the message written small in the center with the color of your choosing.

  2. Break the Hershey bars into sections of 4 and 2.

  3. Put the Oreos (whole, do not attempt to scrape out the white part) in a food processor and pulse until they're turned into crumbs.

  4. Start by putting two 4 piece sections on the top center and bottom center of the cake. Build the large race track oval out from those points. You'll have to break some of the 2 piece sections into single sections. And you may have to grab a knife and trim a single section to fit. Do the same for the inner oval.

  5. Grab the crushed Oreos and spoon them into the oval. Use the back of the spoon to smooth out the Oreos, creating a level race track surface. Use caution when applying the Oreos to the cake. But if you happen to get some crumbs on parts of the cake that shouldn't have Oreos, take a knife or toothpick and pick them off.

  6. Place Hot Wheels cars driving counter clockwise on the race track.

  7. Optional: Add two checkered flags.

Recipe Notes

Because this was my first time making a race car cake, I went with the whole package, but I probably only needed about 20 Oreos. So start by crushing 20 Oreos and set the leftovers aside to eat later.

Want to save this for later? Pin it here!

DIY race car cake made with Costco half sheet cake

Filed Under: party, recipes, tips and tricks

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Comments

  1. Kristina Hudson says

    September 9, 2019 at 12:02 PM

    I love this idea! Looks great Chelsea!

    Reply
    • Chelsea says

      September 12, 2019 at 11:34 PM

      Thank you, Kristina!

      Reply
  2. Nicole says

    September 9, 2019 at 1:36 PM

    This is brilliant!! I never thought about using a pre-made cake and doing the decorating myself, and certainly not a Costco cake. I always just thought of them as “You get what you get” since it’s so pre-determined when you order from them. I could see this method working also for a “dirt” cake or “under the sea” or “farm” or so many other themes! Thanks so much for the idea! It seems so simple that I should have thought of it 🙂

    Reply
    • Chelsea says

      September 12, 2019 at 11:34 PM

      Thanks, Nicole! My mind raced with a bunch of cake ideas too!

      Reply
  3. Paige Cassandra Flamm says

    September 9, 2019 at 11:50 PM

    This is so cute! My kids would love this!

    Paige
    http://thehappyflammily.com

    Reply
    • Chelsea says

      September 12, 2019 at 11:32 PM

      Thank you, Paige!

      Reply
  4. Rachel Steck says

    September 10, 2019 at 8:11 AM

    I LOVE IT! Genius!

    Reply
    • Chelsea says

      September 12, 2019 at 11:32 PM

      Thanks, Rachel!

      Reply
  5. Louise says

    October 7, 2019 at 5:09 PM

    I am a cake decorator (hobbyist) and tell customers if they don’t want to pay me a lot of money for a cake, order a plain cake from Costco and I’ll decorate it for them. I’ve made an additional smaller cake, covered with red fondant and decorated the Costco cake with this addition to look like an old fashion fire alarm. I’ve covered another one in red fondant, added tools I created from modeling chocolate and a handle to make it look like a tool box for my carpenter brother.

    Reply
  6. Stacy says

    November 19, 2019 at 4:39 PM

    I can’t wait to do this when my daughter gets her driver’s license. I will find traffic signs. Thanks for a great idea!

    Reply

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2739 shares