Costco Kirkland Signature Lemon Poppy Seed Loaf Review

Lemon poppy seed loaf shouts spring with its bright and zesty lemon flavor, which goes perfectly with the unique taste and texture of poppy seeds. My mom makes a delicious lemon poppy seed bundt cake that I love, plus Costco’s bakery makes pretty good muffins and nice banana pecan loaf, so I had high hopes for this Kirkland Signature Lemon Poppy Seed Loaf! Does it have what it takes to be another long-time staple in the Costco bakery section?

Side view image of the Costco Kirkland Signature Lemon Poppyseed Loaf in the container sitting on a table.
Costco Kirkland Signature Lemon Poppy Seed Loaf.

My mom sometimes surprises us by deciding to bake something and share it. She only has a few treats she bakes repeatedly and one of them is her lemon poppy seed bundt cake with icing. I don’t really see lemon poppy seed loaf at a lot of bakeries or coffee shops. When I found it at the Costco bakery I wanted to pick it up to review.

Other lemon treats from Costco include the Donsuemor Lemon Zest Madeleines, the Upper Crust Bakery Lemon Bites, the Kirkland Signature Lemon Cream Cheese Danishes and the Nonni’s Limoncello Biscotti Bites.

Side image of the lemon poppyseed loaf out of the container and sitting on a cutting board.
Ready to slice.

Location in Store

You can find this in the bakery section at Costco, it’s not in the refrigerator. The item number is 1250860.


The first thing I noticed is that the loaf smells great! As soon as I opened the container, I noticed a powerful but pleasant lemon smell.

The loaf itself is basically like a poppy seed muffin. There isn’t much lemon flavor coming from the loaf, but there is definitely a hint. You notice the poppy seed crunch and flavor more. The loaf is nice and moist, soft and fluffy, It’s really delicious.

Top down image of one slice of lemon poppyseed loaf served on a white plate.
The loaf is moist and fluffy,

Unfortunately, the icing is a bit of a letdown. It’s quite lemony and extremely sweet. There’s also a very generous amount of it. I found the sweetness kind of overwhelming when I took a bite of icing and cake but the loaf alone is really yummy.


The loaf costs $9.99 Canadian which isn’t terrible for such a large loaf!


The loaf comes in a plastic rectangular resealable container and the best-before date is five days from the day it was packaged on. It’s really easy to slice and if you’re not going to be eating it all the best by date I would slice it and freeze all or some of it.

Top down image of the lemon poppyseed loaf showing the icing with a sprinkle of poppyseeds on top.
Lots of icing!

Lemon poppy seed loaf is perfect for breakfast, a snack or dessert! I think both kids and adults will appreciate its sweet and tart combination.



I obtained the nutrition information and per 1/22 of the cake there are 230 calories, 13 grams of fat, 26 grams of carbohydrates, one gram of fibre, 17 grams of sugar, two grams of protein and 190 milligrams of sodium.

A 1/22 of the cake slice is really not that big. I bet a lot of people (including myself) eat about twice that in one serving.


We already know this isn’t healthy and is loaded with sugar. The loaf does contain real lemon, so it gets some points for that I guess? There are a lot of artificial, chemical-sounding ingredients, unfortunately.

Here are the ingredients – lots of chemical-sounding stuff.


Taste: 7/10

Cost: 8/10

Convenience: 10/10

Nutrition: 0/10


Give it a try!

My parents absolutely loved this and had no complaints about the icing. I found the icing a little sweet but really enjoy the loaf without icing.

Have you tried the lemon poppy seed loaf from the Costco bakery? What do you think of it?

Please note that this review was not paid for or sponsored by any third party. This product was purchased by Costcuisine for the purpose of producing this review. The opinions in this review are strictly those of Costcuisine. Costcuisine is not affiliated with Costco or any of its suppliers. In the event that Costcuisine receives compensation for a post from the manufacturer of a product or some other third party, the arrangement will be clearly disclosed (including where the manufacturer of a product provides Costcuisine with a free sample of the product).

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7 thoughts on “Costco Kirkland Signature Lemon Poppy Seed Loaf Review”

  1. Everyone I served it to loved it. I was at Costco today and was disappointed they were not carrying it anymore. I was an excellent loaf to serve for company and freezes great.

  2. Not going to lie, I was a little excited when I saw this at Costco. I too find the icing too sweet and overpowers the cake. As you can imagine, I was disappointed. I’ve had better. Doubt I would buy it again.

  3. I love lemon so I was pleased to discover this loaf on my trip to Costco. It’s moist and delicious, the poppy seeds give it a mysterious little crunchiness, the lemon icng is devine.

  4. I’ve eaten a few of these since they came out a couple of months ago. We very much like them. A nice break from the Costco banana loaf.
    Yes, of course the icing is sugary but you don’t need to eat it. Besides, the best way to eat it is to spread it over the rest of the cake. That way you end up with the right ratio of icing to cake in each mouthful.

    I think giving it a 0/10 is not reasonable. You are basically saying there is nothing worse. Not sure about that. It really depends on the criteria you are using.

    BTW, there is also a Maple Pecan loaf which looked new to me. I’m going to give it a try this week.

  5. I was curious to read the ingredient list to find out what’s in the icing. Many are made with shortening instead of butter, which imho is rather gross. Who eats raw shortening? Yuck!
    You didn’t say how this loaf compares to your mum’s bundt cake. I’m guessing hers is waaaay better!


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