Costco cakes are popular for their affordability, customization options, and wide variety of designs, making them a favorite choice for celebrations and special occasions. Costco’s Rainbow Cake is a vibrant and festive dessert perfect for any celebration. This 10-inch cake features multiple colorful layers, making it visually stunning and a hit at parties.
Priced at around $15.99, it serves approximately 12 people, making it an affordable and delightful choice. You can order it by filling out a cake order form at your local Costco bakery, and it’s recommended to place the order at least 24 hours in advance to ensure availability. With its bright and cheerful appearance, Costco’s Rainbow Cake is sure to be a crowd-pleaser at any event.

Key Features of Costco’s 10″ Rainbow Cake
- Size: 10-inch diameter
- Portions: Serves about 12 people
- Weight: 7 pounds
- Certification: Kosher OU-D certified
- Shipping: Shipped with dry ice to maintain freshness
This concise yet detailed description highlights the essential features of Costco’s 10″ Rainbow Cake, ensuring clarity and ease of understanding.
Ingredients
The cake is made with enriched wheat flour, sugar, egg whites, soybean oil, and several other ingredients, including artificial colors and flavors. It may contain traces of nuts due to the production facility.
Storage and Thawing Instructions
If not consumed immediately upon arrival, store the cake in the freezer. Before serving, allow the cake to thaw for two hours. The cake can be refrozen in its original packaging for up to six months or stored in the refrigerator for 2-3 days.
Nutritional Information per Serving
Each serving of the Costco 10″ Rainbow Cake (1 slice, 227 grams) contains:
| Nutrient | Amount | % Daily Value (DV) |
|---|---|---|
| Calories | 920 kcal | – |
| Total Fat | 59g | 76% |
| Saturated Fat | 28g | 140% |
| Trans Fat | 1g | – |
| Cholesterol | 110mg | 37% |
| Sodium | 490mg | 21% |
| Total Carbohydrates | 86g | 31% |
| Dietary Fiber | 0g | 0% |
| Sugars | 62g | – |
| Added Sugars | 54g | 108% |
| Protein | 5g | – |
| Vitamins and Minerals | – | – |
| Vitamin D | 0 mcg | 0% |
| Calcium | 35 mg | 2% |
| Iron | 1 mg | 6% |
| Potassium | 45 mg | 0% |
Step-by-Step Guide to Ordering a Costco Rainbow Cake
Ordering Process
- Visit Costco: Go to your nearest Costco warehouse. Use Costco’s store locator if needed.
- Find the Bakery Section: Look for the bakery section with a cake ordering kiosk labeled “Order Cakes Here.”
- Fill Out Order Form:
- Cake Size: Choose a 10-inch round cake (serves 16) or a half-sheet cake (serves 48).
- Flavor Options: Select between white vanilla cake with cheesecake mousse or chocolate cake with chocolate mousse.
- Design and Decorations: Pick from designs like roses, balloons, rainbows, or seasonal themes.
- Personalized Message: Add a custom message and choose the writing color.
- Event Details: Indicate the type of event and any special design requests.
- Contact Information: Provide your name, phone number, and Costco membership details.
- Specify Pickup Date and Time: Ensure at least 24-48 hours’ notice.
- Submit the Form: Place it in the designated box or hand it to a bakery employee.
- Pickup: Return on the pickup date, provide your name, and collect your cake from the bakery section.
Tips for a Smooth Experience
- Plan Transportation: Ensure your vehicle can accommodate the cake.
- Refrigeration: Pick up the cake close to the event time if you have a small fridge.
- Assistance: Have someone hold the cake during long drives to prevent damage.
Shipping & Returns
- Standard Shipping: Uses UPS 2nd Day Air.
- Express Shipping: Additional handling fees apply for express options.
- Delivery Availability: Available to Alaska and Hawaii with extra fees. Not available to Puerto Rico.
- Return Policy: Products can be returned to any Costco warehouse worldwide.
For more details on ordering, specifications, and nutritional information, visit Costco’s official page.
