Costco Kirkland Signature Chewy Protein Bars Review

A mix between a granola bar and candy bar!

Please note that this review was not paid for or sponsored by any third party. The opinions in this review are strictly my own. I am not affiliated with Costco or any of its suppliers. I am just a fan of the company. I write these reviews to help my fellow shoppers.

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I saw a new item last time Sean and I were at Costco. The Costco Kirkland Signature Chewy Protein Bars. These can be found in the snack section at Costco near the front of the store and the item number is 1377067.

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Are these a candy bar, protein bar or granola bar? I got Sean to try these with me and we both agreed they taste like a nutty granola bar and candy bar hybrid. If you like the combination of chocolate and peanuts or peanut butter you’ll enjoy these. I’m actually shocked there isn’t more sugar per bar because these are really sweet, so sweet they taste like a candy bar! There’s a lot of peanuts so you get lots of nutty flavor. The bottom of the bars are coated in dark chocolate and there’s mini semi-sweet chocolate chips scattered on the top of the bars. To summarize what these taste like: peanuty, chocolate granola bar/candy bar.

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I paid $16.99 Canadian for the box of 42 Costco Kirkland Signature Chewy Protein Bars.


These are great for a quick snack, meal replacement or dessert. The expiry date is about nine months from the date we purchased the bars. Each bar is individually sealed.

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These are gluten-free. One bar is 180 calories, 11 grams of fat, 16 grams of carbohydrates, six grams of fibre, six grams of sugar, 10 grams of protein and 125 mg of sodium. The ingredients list is definitely very long and not as healthy and I have no idea what fructooligosaccharides.

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These are tasty but too unhealthy for me to consider them as a protein bar option to eat on a regular basis. If you’re looking for a good protein bar from Costco check out my review for the RXBAR.

Taste: 7.5/10

Cost: 8/10

Convenience: 10/10

Nutrition: 3.5/10

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9 thoughts on “Costco Kirkland Signature Chewy Protein Bars Review”

  1. Fructooligosaccharides (FOS/Inulin)
    May be the healthiest ingredient on the ingredient list. FOS is a prebiotic, it’s used as a food source (like fiber) by the beneficial bacteria that currently reside in your gut. FOS helps increase the numbers of Bifidobacteria in your gut which have many clinically studied health benefits. This protein bar, along with the FOS, is the bomb!

  2. Fructooligosaccharides are subtly sweet and low-calorie. They are nondigestible, so they don’t have an effect on blood sugar levels. FOS may also have multiple health benefits.

  3. Your nutritional rating for this product is nonsensical. The RXBAR you recommend instead, and gave a 9.5/10 nutritional rating to, has only 2 grams less fat, but 11 grams more sugar than this product. Yes, it has a much simpler ingredients list, but that isn’t its nutrition. If you want to rate how natural a product is, make that it’s own rating.

    • Hi! RX bars don’t contain any unnatural sweeteners or sugar, in my opinion nutrition is eating less processed foods. The sugar in RX bars is coming from dates. Everyone has their own opinion and I love hearing others thoughts 🙂 thanks for commenting!

  4. Hmm I’m surprised about your rating for nutrition. Sure the taste may make you feel guilty but this has a lot of protein and fiber for a bar of its size and taste. But I agree kind of, that at 190 calories and the %age of fat is not great.


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