4.91 from 153 votes
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Keto Peanut Butter Bars

These easy keto peanut butter bars are the ultimate low carb treat! They are completely sugar free and grain free, and my kids swear they taste like Reese's Peanut Butter Cups.
A stack of keto peanut butter bars on a small cupcake stand, with a bite taken out of the top one.

These easy keto peanut butter bars are the ultimate low carb treat! They are completely sugar free and grain free, and my kids swear they taste like Reese’s Peanut Butter Cups.

A stack of keto peanut butter bars on a white background, with the title in the lefthand top corner

Trigger warning! If peanut butter is your kryptonite, you may just want to look away for a while. Because these keto peanut butter bars are bound to make you weak in the knees. They are no bake bars, and so easy to make, even your kids could do it on their own.

If you’ve followed me for a while, you know that peanut butter is my jam. I have so many delicious keto peanut butter recipes, and about a zillion ideas in my brain for more. I’m never ever going to stop making delicious sugar free treats with peanut butter. Never ever. Don’t even TRY to convince me otherwise.

Some of my most popular keto peanut butter desserts include: Keto Peanut Butter Brownies, Keto Peanut Butter Dirt Cake, and the brand new but insanely popular Keto Peanut Butter Pie.

My recipe for these no bake peanut butter bars has been around forever, almost from the moment I started blogging. It used to be part of a very old collaborative low carb cookbook, but I decided to share it on the blog back in January of 2016. And today, I decided to update it with a new new video.

So now I can show you just how insanely easy these are to make.

Close up shot of keto peanut butter bars piled on waxed paper on a white wooden table

Is peanut butter keto?

This is a question I get from readers frequently. And it stems from a misunderstanding about what the keto diet really is.

The most basic definition is as follows: a keto diet is any diet that keeps you in ketosis. The food itself is not “keto” because anything in tiny quantities will not kick most people out of ketosis. This means that even a small bite of banana or potato could be part of a keto diet, if you really wanted to work it into your macros.

This is not something I really recommend, since tiny amounts of old high carb favorites are not very satisfying. They may also trigger cravings and you could easily find yourself overeating.

So why do some people say peanut butter is not keto? Because there are many specific keto “programs” and keto “coaches” that have approved and not approved food lists. And because peanuts are technically legumes similar to beans, some programs have put them on the naughty list.

There is nothing about the lowly peanut that makes it keto or not keto. It’s actually quite a low carb food choice. So if you are like me, and simply do keto your own way (which is whatever way that keeps you in ketosis), then peanuts and peanut butter can be part of your healthy diet.

I don’t recommend eating it by the spoonful or even eating it every day. But the occasional keto peanut butter treat is usually not a problem for most keto dieters.

Keto peanut butter bars on waxed paper on a wooden cutting board.

How to make easy keto peanut butter bars

Did I mention how easy these no bake bars are to make? Yes? Well let me say it again: they are ridiculously easy. They take only 6 basic ingredients, and come to together in about 15 minutes.

My recipe for keto peanut butter bars takes peanut flour, and I get a number of questions about what that is and whether you can use other keto flours instead. Here’s what I can tell you:

  1. Peanut flour is a good choice for a number of reasons. Peanut flour is basically peanuts that have been roasted and ground to a fine powder, so it helps intensify the peanut butter flavor of the bars.
  2. The powdery consistency is what gives these bars their unique texture. The dough becomes like cookie dough and is soft enough to be pressed into a pan but firm enough that the bars are solid at room temperature.
  3. Peanut butter powder and PBFit are essentially the same thing and work just as well. Just make sure that whatever you choose, it does not contain any added sugars. The original PBFit has sugar, but there is also a sugar-free version made with monk fruit. This will make your bars sweeter so you may want to cut back on the powdered sweetener.
  4. You can use almond flour but it has a higher fat content than peanut flour, so you will need more of it to achieve the same dough-like texture. I actually recommend a combination of almond and coconut flour to get the right consistency: about 2 cups almond flour and 1/4 cup coconut flour.
  5. You will know you have the right consistency, no matter what flour you use, when the dough holds together and really feels like cookie dough. Actually, the consistency is more like play dough. A big edible ball of low carb play dough!

A stack of keto peanut butter bars on a small cupcake stand, with a bite taken out of the top one.

How to store Keto Peanut Butter Bars

The great news is that because these bars have nothing in them that spoils easily, they can be made well in advance.

I recommend storing them in the fridge in a covered container, so that they don’t get overly soft. They do stay firm at room temperature for a few hours, if you don’t live in a hot climate. The chocolate topping could get mighty soft and melty in the summer!

They can last up to 3 weeks, if properly stored and refrigerated. To freeze, I would wrap up the bars tightly in plastic wrap, to avoid freezer burn. They can be frozen for several months.

Ready to make these delicious and easy No Bake Peanut Butter Bars?

More keto recipes that use peanut flour

A stack of keto peanut butter bars on a small cupcake stand, with a bite taken out of the top one.
4.91 from 153 votes

Keto Peanut Butter Bars

Servings: 16 bars
Prep Time 20 minutes
Total Time 20 minutes
These easy keto peanut butter bars are the ultimate low carb treat! They are completely sugar free and grain free, and my kids swear they taste like Reese's Peanut Butter Cups.

Ingredients
 

Peanut Butter Bars:

Chocolate Glaze:

Instructions

Peanut Butter Bars:

  • Line an 8x8 or 9x9 pan with wax paper or parchment paper.
  • In a large bowl, combine melted butter, melted peanut butter, sweetener, vanilla, and salt. Stir in peanut flour until dough comes together (it will be like a dough, not like a batter).
  • Press dough firmly and evenly into prepared baking pan. To really get it even, cover it with more wax paper or parchment paper and use a flat-bottomed glass or measuring cup to press).

Chocolate Glaze:

  • Set a heatproof bowl over a pan of barely simmering water, and add the chopped chocolate and butter. Stir until melted and smooth.
  • Pour over bars and use a knife or offset spatula to spread to the edges. Refrigerate 1 hour until set.

Video

Nutrition

Serving: 1bar | Calories: 216kcal | Carbohydrates: 7.2g | Protein: 5.6g | Fat: 18.7g | Fiber: 2.9g
I’d love to know your thoughts, leave your rating below!

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Nutritional Disclaimer

Please note that I am not a medical or nutritional professional. I am simply recounting and sharing my own experiences on this blog. Nothing I express here should be taken as medical advice and you should consult with your doctor before starting any diet or exercise program. I provide nutritional information for my recipes simply as a courtesy to my readers. It is calculated using MacGourmet software and I remove erythritol from the final carb count and net carb count, as it does not affect my own blood glucose levels. I do my best to be as accurate as possible but you should independently calculate nutritional information on your own before relying on them. I expressly disclaim any and all liability of any kind with respect to any act or omission wholly or in part in reliance on anything contained in this website.

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4.91 from 153 votes (26 ratings without comment)

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432 Comments

  1. Question: are peanut flour and powdered peanut butter the same? When I entered peanut flour on amazon, PB Fit came up also. I have that in my pantry but not PB flour.

  2. Arthur Foo says:

    I used numerous of your recipes and my wife and I have been enjoying the results!!

    I was wondering if substituting almond flour for the peanut flour in this recipe would work. I make another recipe with peanut butter powdered swerve and vanilla, roll them into balls and then coat them with melted chocolate (stevia/Monkfruit chips). They come out great!

    Your thoughts?

    Thank you!!

    1. YOu end up needing a lot more almond flour so that the dough isn’t too wet and mushy. Which can increase the carb count some.

  3. 5 stars
    Favorite recipe!! Thanks for making such fabulous and delicious recipes 😍

  4. Maybe because they resemble Mid-Day squares?

  5. 5 stars
    Better than the store bought….and better for you!

  6. 5 stars
    I don’t think I did but I guess anything is possible. Thank you for your help

    1. Wish I had more answers. What brand of peanut flour are you using?

      1. 5 stars
        I used Tru nut peanut flour.

  7. 5 stars
    I don’t think I did but I guess anything is possible. Thank you

  8. 5 stars
    Sorry my original comment some how got autocorrected to some weird stuff. It was not powdered milk.
    I used Lakanto Sugar Free Powedered MonkFruit Sweetner with Erythritol.
    I could not get the dough to form no matter how much peanut flour I used. I used the same ingredients except for the powdered sweetner. I have no idea what I did wrong

    1. I wish I could say… there’s no reason it should have been soupy at all, unless you mismeasured something.

  9. 5 stars
    Sorry my original comment some how got autocorrected to some weird stuff. It was not powdered milk.
    I used Lakanto Sugar Free Powedered MonkFruit Sweetner with Erythritol.
    I could not get the dough to form no matter how much peanut flour I used. I used the same ingredients except for the powdered sweetner. I have no idea what I did wrong!

  10. 5 stars
    I just made this today using the same product except the powdered sweetener are used Lecanto sugar-free powdered milk, sweet soup now with everything wrong. I could not get this to go to the dough consistent see that you had. So it’s sticky but I honestly added a ton, more peanut flour and I had to stop otherwise I would’ve just added way too much, but in the end it still taste good might be a little dry because peanut butter is. I definitely will make it again. What did I do wrong that I could not get the dough?

    1. I do not understand. You used sugar free powdered milk?

      1. I used Lakanto Sugar Free Powedered MonkFruit Sweetner with Erythritol

      2. Sorry my original comment some how got autocorrected to some weird stuff. It was not powdered milk.

      3. 5 stars
        Maybe I should have used the Swerve like you did

  11. Lorry Norton says:

    5 stars
    okay, this is the one. it’s the recipe I’m gong to make! it sounds so good, and I have everything for it. yay!!! Thank you!

  12. 5 stars
    I did not know what to expect when I saw the recipe for these bars and decided to make them. they are so ooy gooy good! It was like I was eating a Reece cup. The only thing my daughter and I did was double the recipe ???? these bars are so rich a small piece is all I need to knock my sweet tooth into the next millennium. Thank you for this awesome recipe!

  13. 5 stars
    These peanut butter bars are so good! I made them for Thanksgiving, but now I have to get them out of the house so that I can get back on track!!

  14. Kathy Tilley says:

    Great recipe for a post dinner snack.

    1. Kathy Tilley says:

      Made with almond and coconut flour.

  15. I was about to throw away my pb powder because it tastes horrible by itself…and then I found your recipe! Great tasting “Reese’s” pb bar!!

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