Costco cakes are one of the easiest and most affordable ways to feed a crowd. Whether you’re planning a birthday, baby shower, graduation, or office party, here’s exactly what to know before ordering.
Cake Sizes
Costco offers two custom cake sizes:
- 10″ Round Cake – serves around 16
- Half-Sheet Cake – serves up to 48
The half-sheet is a popular pick for larger gatherings. I recently tried it at my friend’s party, and it was honestly better than I expected—moist, well-filled, and plenty for the crowd. It made me realize how underrated Costco cakes really are.
For my next event, I decided to order the chocolate cake with chocolate mousse version. My whole family prefers chocolate, and I think it’s the best choice for us this time. It’s rich, layered, and not overly sweet.
Cake Flavors
Costco custom cakes come in two options:
- White cake with vanilla cheesecake mousse
- Chocolate cake with chocolate mousse
The white cake is light and fluffy. The chocolate one is richer and denser. Both have mousse fillings and are topped with a smooth, sweet frosting.
Decoration Options
You can choose from preset designs:
- Roses (white or colored)
- Balloons, candles, or rainbow
- Baby shower or seasonal themes
- American flag or cross
- Plain scored (lined for cutting)
Basic writing like “Happy Birthday” can be added—just fill it in on the order form.
How to Order a Cake from Costco
Ordering is done in-store only. There’s no online form.
- Visit the bakery counter
- Fill out the paper order form
- Drop it in the box
- Order at least 24–48 hours in advance
- Pick up your cake from the bakery rack on your scheduled date
Use the special request box for any writing style, color preferences, or mousse flavors.
For a full walkthrough, see my guide on how to order Costco party platters.
Costco Cake Prices (2025)
Prices vary slightly by location:
- 10″ round – about $15.99–$16
- Half-sheet – about $24.99–$25
For the size and quality, this is one of the best-value cakes you can buy.
Ready-Made Costco Cakes
Costco also offers bakery favorites you can grab without ordering ahead:
- Tuxedo Chocolate Mousse Cake – layered, elegant, ~$22
- 12″ Cheesecake – plain or seasonal, ~$20
- Tiramisu – available in bars or individual cups
- Mini Cakes – Strawberries & Cream, Cookies N Cream, Carrot
- Peaches & Cream Bar Cake – seasonal, ~$18.99
- Mini Cupcakes (12-pack) – ~$8.99
These are great for smaller get-togethers or last-minute needs. You can mix and match with other Costco dessert platters for variety.
What People Love (and What They Don’t)
Best-rated cakes:
- White cake with vanilla cheesecake mousse
- Tuxedo Chocolate Mousse Cake
- Cheesecake, banana cream pie, tiramisu
- Mini cakes like Strawberries & Cream and Cookies N Cream
Mixed reviews:
- Some bar cakes (carrot, strawberries & cream)
- Mini All-American Cakes (often too rich or dry for some)
For full catering tips, check out how to order Costco catering.
Quick Costco Cake Summary
| Cake Type | Description | Price | Servings |
|---|---|---|---|
| 10” Custom Round | White or chocolate + mousse | ~$16 | ~16 |
| Custom Half-Sheet | Same + choice of preset design | ~$25 | ~48 |
| Tuxedo Cake | Chocolate mousse & ganache layers | ~$22–23 | ~12 |
| 12” Cheesecake | Plain or seasonal (pumpkin, lemon) | ~$20 | Large |
| Bar Cakes | Seasonal (tiramisu, fruit, etc.) | ~$18–20 | Varies |
| Mini Cupcakes (12-pack) | White/chocolate with sprinkles | ~$8.99 | 12 |
Final Thoughts
If you want something budget-friendly, easy to serve, and actually tasty, Costco cakes are a safe choice. The portion sizes are generous, the ordering process is simple, and you don’t need to spend a fortune to feed a big group.
I’ve had good experiences with the half-sheet cake and am excited to try the chocolate version at my next event. If you’re planning a party, pair it with a few other easy Costco options like snacks, deli items, or fruit platters to round things out.
Need help picking the right combination? I’ve covered Costco appetizers, charcuterie boards, and more to make your planning easier.
Let me know what you’re serving, and I can help you build your party menu start to finish.