Costco’s Lemon Blueberry Loaf is burning things up on Facebook and Instagram so we had to give it a try at our house!
The loaf is a delicious addition to their bakery lineup but isn’t always in stock so finding one at the warehouse can feel like a treasure hunt.
The loaf has a delightful combination of citrusy lemon flavor and juicy blueberries, topped with a sweet streusel crumble and icing drizzle. This loaf is perfect for breakfast, dessert, a mid-day snack or something to devour when you have a BAD case of the munchies :).

Read on for a detailed taste review, nutritional information, price, and storage tips.
The Kirkland Signature Lemon Blueberry Loaf is a visually stunning baked good that promises a balance of sweetness and tartness. Priced affordably and sized generously, it’s a great option for anyone who loves citrus-infused treats.
Taste Review
Upon first bite, the zesty lemon flavor shines through, complementing the natural sweetness of the blueberries. The texture is moist yet light, making it an enjoyable treat without feeling too heavy. The buttery streusel topping adds a slight crunch, while the drizzle of icing provides a final touch of sweetness that brings everything together.

Each slice contains a good amount of blueberries, which burst with flavor and add a pleasant juiciness to the loaf. The lemon flavor is noticeable but not overpowering, making it perfect for those who enjoy a subtle citrus taste.
Nutrition and Ingredients
The exact nutritional information for the Lemon Blueberry Loaf isn’t officially listed by Costco, but based on similar bakery items, here’s an approximate breakdown per serving:
Nutrient | Estimated Per Slice (1/10 of loaf) |
---|---|
Calories | ~350-400 kcal |
Total Fat | ~15-18g |
Sodium | ~200-250mg |
Carbohydrates | ~50-55g |
Protein | ~4-5g |
These values are approximate estimates and can vary slightly depending on batch preparation.
The ingredient list on the label is one of the few things that we didn’t like about this product. The list starts with Sugar as the number one ingredient, has a few other ingredients that I recognize, and then is filled with preservatives, emulsifiers, chemicals, etc.

Price
The Costco Lemon Blueberry Loaf is priced at $8.99, making it a budget-friendly option considering its large size and premium ingredients.
This loaf is priced a dollar more than the similarly sized Banana Nut Loaf and two bucks more than the new Costco Muffins.
Given the generous portion, it’s a great value compared to similar bakery items from other retailers.

Storage & Freezing Tips
If you’re not planning to finish the entire loaf within a few days, proper storage is key to maintaining its freshness.
Short-Term Storage (1-3 Days):
- Keep the loaf in its original packaging or wrap it tightly in plastic wrap.
- Store at room temperature in a cool, dry place.
- Avoid refrigeration, as it can dry out the loaf.
Freezing for Long-Term Storage (Up to 3 Months):
- Slice the loaf before freezing to make thawing individual portions easier.
- Wrap each slice or portion in plastic wrap, followed by aluminum foil or a freezer-safe bag.
- To thaw, leave a slice at room temperature for about 30 minutes or microwave it for 20-30 seconds for a warm, fresh taste.
By following these storage tips, you can enjoy the Lemon Blueberry Loaf even weeks after purchasing!
Final Thoughts
Costco’s Lemon Blueberry Loaf is a standout bakery item that delivers on both flavor and texture. The balance of zesty lemon, juicy blueberries, and crunchy streusel topping makes it a treat that appeals to a wide range of tastes.
With its affordable price of $8.99 and large portion size, it’s an excellent option for those looking for a delicious, bakery-quality loaf at a great value. Whether enjoyed fresh or frozen for later, this Lemon Blueberry Loaf is a must-try for any Costco shopper!