Costco Carbonaut Low Carb Keto Bread Review

Plant based, keto certified and NON GMO!

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.

test alt text

This review is for all my keto, low-carb people! Full disclosure: I’m a carb loving girl so I definitely can’t say I’m on a keto diet or even a low-carb diet. I do however respect those who are on the keto diet or that are trying to lower their carb intake so today I’m reviewing the Costco Carbonaut Low Carb, Keto Bread. This can be found with all the other bread at Costco and the item number is 1494429.

test alt text


Alright so here’s my honest opinion about this product. It’s not that bad! Honestly it’s not as awful tasting as I expected it to be. It actually does resemble bread and tastes slightly similar. There are a few things I’ll point out though. First of all the bread is very soft and spongey, even toasted. Basically I could roll this up and make a little ball with it so the texture is definitely different than regular bread. Also both my husband and I noticed it had a bitter aftertaste that lingered in your mouth. I’m not sure where that’s coming from but it was noticeable. The seeds on the outside are great because it makes it seem more like normal bread and also adds some extra crunchy texture. I wouldn’t choose that over regular bread but if I were on a keto diet this would probably taste amazing. Especially turned into a grilled cheese or slathered with butter.

test alt text


I paid $8.99 Canadian for the bag of Costco Carbonaut Low Carb, Keto Bread. You get two loaves in the bag and each loaf is 544 grams.


I popped my bread into the freezer as soon as I brought it home and it freezes well. The best before date on the bread is about a week from the date I purchased the bread. This can be toasted and makes a great bread option for those who are on keto or are following a low carb diet.

test alt text


This is plant based, NON GMO and certified keto! This is NOT gluten-free, I find most keto products are gluten-free but not this bread. One slice is 80 calories, zero grams of sugar, three and a half grams of fat, six grams of fibre, 140 mg of sodium, six grams of protein, and eight grams of carbohydrates. That’s a lot of protein for one small slice of bread!

This bread is probably amazing for those who are on a strict keto diet. I didn’t love the taste (the texture and bitter aftertaste are my main complaints) but that’s most likely because I eat regular bread all the time! I’d say if you’re really watching your carbs or are on keto, give this a try.

Taste: 6.5/10

Cost: 8/10

Convenience: 10/10

Nutrition: 8.5/10

Would you try this bread? If you’ve tried it let me know what you thought!

10 thoughts on “Costco Carbonaut Low Carb Keto Bread Review”

  1. I’m loving the carbonaut bread – for a low carb bread option the price point is great. Since I am not a big bread eater to begin with, I don’t mind the taste. It toasts up nicely too!

  2. I’m so happy to find this bread!! It does well toasted and holds sandwich ingredients well! I don’t have to keep making my own bread only- though the “Keto bread mix 1.0” is good also . The Carbonaut is more typically bread-like.

  3. My Daughter bought me this bread from Costco. I used it for a grilled ham and cheese sandwich. I’m very impressed with the taste and texture of the bread.

  4. We bought this bread at Costco.. we love it and toast it all the time… great for tuna melts and toast and peanut butter or almond butter. Overall great bread!! We did put it in the freezer right away..

  5. This bread is quite good for low carb bread. i have made a lot of low carb breads including yeast breads and none of them were as good as this bread. I have only tried the seeded bread and would like to try the white one although looking at the ingredient list it looks about the same except for a few seeds.

  6. The texture is nice, but we did not like the flavour. And it smells bad when being toasted. I will finish the loaf with lots of pb and j. I will stick with making buns with Fatboy dough.

  7. I was very happy that I found this bread in Costco. I am a low carb lifestyle follower and this is one of the best tasting and best price product. Love the taste and texture.

  8. Just so you know this is not a Costco bread. You can buy this bread in other grocery stores. I can get it at my local grocery store here, Sprouts Farmers Market. It’s not even an American bread. It’s Canadian. Not Costco.


Leave a Comment