Best No-Bake Keto Peanut Butter Chocolate Bars

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Peanut Butter meets creamy chocolate in these No-Bake Keto Peanut Butter Chocolate Bars to create a mouthwatering delicious treat! With only 6 ingredients and minimal time, you’ll love this low carb dessert.

A picture of 3 No Bake Peanut stacked on a napkin

Best No-Bake Keto Peanut Butter Bars with Chocolate

My hubby loves Reese’s Cups, but obviously, they aren’t keto-friendly. I tried several recipes I found on Pinterest when we first started eating keto several years ago to satisfy our sweet tooth. Unfortunately, they all tasted like peanut butter flavored coconut oil. After a few wasted and disappointing attempts, I gave up.

Since I am a good wife and love my husband, I decided I’d create a recipe for No-Bake Keto Peanut Butter Chocolate Bars that actually tasted like Reese’s Cups. It took a little trial and error, but I finally got the recipe just right, and they turned out amazingly delicious! In fact, after 23 years of marriage, my hubby got down on one knee and proposed to me again after taking a bite.

Can I have peanut butter on keto?

While some avoid peanut butter since peanuts are technically legumes, which can cause inflammation in the body, many enjoy peanuts and peanut butter with no problems. Make sure to look for peanut butter that doesn’t have any added sugar. Peanut butter is naturally lower in carbs and high in fat, but make sure to look for a brand with no added sugar.

What chocolate bars are low carb?

Several brands make low carb chocolate. In this recipe, I used Lily’s milk chocolate candy bars, but you could also substitute Lily’s sugar-free chocolate chips instead. Also, Choc Zero and Lakanto make low carb chocolate bars.

I’ve included step by step pictures below to illustrate how quickly these come together. Make sure to scroll to the bottom of the post for the full recipe and instructions along with nutritional information in the recipe card.

Ingredients for No-Bake Peanut Butter Bars:

Natural Peanut Butter: Look for peanut butter with no added sugars. I prefer crunchy, but if you smooth peanut butter is your jam, it works just as well.

Butter: To add to the flavor of the peanut butter and add an extra layer of creaminess. It also helps bind the rest of the ingredients.

Coconut Flour: The coconut flour gives these bar structure.

Keto-Friendly Powdered Sweetener: Since the peanut butter doesn’t have any added sugars, you’ll need to add a keto-friendly sweetener for taste. It also works together with the butter and coconut flour to bind the ingredients together and add bulk to the peanut butter.

Lily’s Milk Chocolate Bar – The smooth, decadent chocolate topping is made by melting this sugar-free bar.

ingredients for first layer of peanut butter bars in a mixing bowl

Step One: To make the creamy peanut butter layer, mix natural peanut butter, coconut flour, and Lakanto Powdered Sweetener. I loved the added texture that crunchy peanut butter added to the No-Bake Keto Peanut Butter Chocolate Bars, but you can use creamy if you prefer.

Tip: You can use almond flour in place of coconut flour. The conversion is 1/4 cup coconut flour is equal to 1 cup of almond flour.

What kind of peanut butter do you use?

As I mentioned previously, my favorite natural peanut butter is Smucker’s Natural. You’ll want to look for a natural peanut butter without any added ingredients such as sugar or palm oil.

A few natural peanut butter options:

Can I use almond butter instead of peanut butter?

Sure, you can easily substitute any nut butter for peanut butter in this recipe. I would caution to make sure that it is a natural nut butter without any added sugar.

peanut butter layer mixed together with beaters from mixer in bowl

Step Two: I would suggest using a hand mixer to make sure the peanut butter filling is smooth and creamy.

keto no bake peanut butter bars spread in baking dish with a spoon

Step 3: Spread the peanut butter layer in the baking dish then pop it in the freezer for 10 minutes so that the layer hardens to make it easier to spread the chocolate layer.

Tip: Line the baking pan with parchment paper to make clean up a snap.

keto chocolate, low carb chocolate, sugar-free chocolate melted in a bowl for the chocolate layer

Step 4: I melted a Lily’s Creamy Milk Chocolate Bar sweetened with Stevia for the chocolate layer instead of the dark chocolate Lily’s Chocolate Chips so that it would taste more like a Reese’s Cup. Then, I spread the chocolate layer on top of the peanut butter and put it back in the freezer to set up.

How to melt chocolate so that it doesn’t harden?

The key to melting chocolate in the microwave is to use a low setting so that it melts slowly. This post for methods and tips for how to melt chocolate includes detailed instructions and other methods of melting chocolate.

two sugar-free peanut butter bars stacked on parchment paper

Can I make keto peanut butter cups with this recipe?

Sure! Instead of making Keto Peanut Butter Cups, which would take a bit more time, I made bars because they are so much easier. But, if you prefer to make cups, spoon a bit of the peanut butter layer in greased muffin tins, pop in the freezer, then melt chocolate for the top layer.

peanut butter bar with a bite taken out of it on a square of parchment paper

More Keto Peanut Butter Dessert Recipes:

Don’t Miss Any New Keto Recipes

You can access all of my Keto/Low Carb Recipes in my Keto/Low Carb Recipe Index or follow me on Pinterest for fabulous Keto/Low Carb Recipe Ideas. If you are just getting started following a keto diet and would like more information, here is a list of fantastic resources. Amazon has several excellent books you may want to check out here.

overhead shot of low carb peanut butter bars stacked on a white plate

I’m pretty sure this is my absolute most favorite keto treat to date. Yes, they are as good as they look. No-Bake Keto Peanut Butter Chocolate Bars combine tasty peanut butter with a mouthwatering milk chocolate layer for a fantastic keto treat.

How many net carbs in this recipe?

This recipe makes 16 keto chocolate peanut butter bars. Based on that number of servings, each is only 2g of net carbs. This recipe is also sugar-free, gluten-free, and grain-free.

More No-Bake Keto Desserts


How to Make No Bake Keto Peanut Butter Bars:


A picture of No Bake Peanut Butter Chocolate Bars on a napkin
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4.70 from 212 votes

No-Bake Keto Peanut Butter Chocolate Bars

Peanut Butter meets creamy chocolate in these No-Bake Keto Peanut Butter Chocolate Bars to create a mouthwatering delicious low carb treat!
Prep Time10 minutes
Time to Set2 hours
Total Time2 hours 5 minutes
Course: Dessert
Cuisine: American
Servings: 16 squares
Calories: 150kcal
Author: Kasey Trenum


For the Chocolate Topping:


  • In a bowl, beat softened butter at high speed. 
  • Add powdered Monkfruit powdered, peanut butter, and coconut flour then beat with a mixer again on medium until all of the ingredients are thoroughly combined. 
  • Line a 9 X 9-inch baking pan with parchment paper (or grease pan) and spread the peanut butter layer evenly then place in the freezer for 10 minutes.
  • Meanwhile, tear the Lily's Smooth Creamy Chocolate Bar into pieces in a small greased glass container and add 1 tablespoon of butter. 
  • Microwave for 30 seconds on the low power setting then stir. If it is not completely melted microwave in 15-second intervals on low power stirring between each until it is melted. Make sure to always stir between intervals as it will continue to melt when you stir it.
    **Do not overcook, or the chocolate will become hard and will not spread. 
  • Remove the baking pan from the freezer and spread the pour the chocolate layer on top of the peanut butter layer, then using a spatula spread it evenly.
  • Return to the freezer for several hours or overnight to allow the No-Bake Keto Peanut Butter Bars to setup. Once they have set up, you can store either in the freezer or the fridge. We tried ours both ways, and they are delicious! 



The sugar alcohols in both the Monkfruit and Lily's Chocolate bar are not included in the nutritional information since most subtract to calculate net carbs. 
You can use almond flour in place of coconut flour. The conversion is 1/4 cup coconut flour is equal to 1 cup of almond flour.
Swerve Confectioners can be subbed for Lakanto Monkfruit powered at the same measurement. 


Serving: 1piece | Calories: 150kcal | Carbohydrates: 5g | Protein: 4g | Fat: 13g | Fiber: 3g | Sugar: 1g | Vitamin A: 20IU
Tried this recipe?Mention @kaseytrenumblogger or tag #kaseytrenumblogger!

collage of hero images of keto copycat Reese's bars




  1. 5 stars
    I’ve been doing keto for about a year now and these peanut butter bars are the real deal to fix my Reese’s craving. In fact, they are BETTER! Seriously so good, so easy!

    1. Wow, Lauren I’m so glad you love them so much. Thanks for taking the time to comment.

  2. 5 stars
    If you need a sweet treat, you have found it. Do not try any of the other CB keto bars out there. They do not compare. These are TO DIE FOR!!! So delicious!

  3. I was desperately looking for something sweet and low carb to make..and eat!! But my cupboards were a little bare! Had to make substitutions….and make half a batch. Used a combo of natural peanut butter and Fatso peanut spread, butter, powdered swerve and almond flour and threw in chocolate chips (Lily’s). Used a cookie scoop and made 13 little bombs…absolutely fabulous!! Thank you for the recipe…next time will make as written but in the meantime will enjoy with pleasure!! (You made my day!)

    1. Fantastic! Thanks so much for taking the time to rate the recipe. I’m glad you loved it.

  4. 5 stars
    These are so yummy! Next time I will toss in the chocolate chips as someone else suggested. One concern – when I enter the recipe in MyFitness Pal, the net carb per serving is 10. The only substitution I made in this batch is to use Swerve Confectioners for Lakanto Monkfruit powered at the same measurement.

  5. 5 stars
    these are delicious but they didn’t harden up very well. the peanut butter was a little soft but over all delicious!!

  6. 5 stars
    These are so good and super easy to make. My son doesn’t like reese’s, but he LOVES these. Thanks for a great recipe!

    1. You are so right, Julie! This is my hubs favorite, and he LOVES chocolate and peanut butter. Thanks for your comment and review!

  7. 5 stars
    The peanut butter base is in the freezer right now. Tasted the leftover in the bowl and it is yummy. I put them in 16 individual silicone cupcake pans – easier for me :-). The only thing I will try differently next time is to use allulose as I don’t care for the cooling effect of the the erythritol in the monkfruit. Thank you Kasey for another wonderful recipe!

    1. Awe, thank you so much! This is my hubbies faves. Yeah what I have discovered are some people are more sensitive to the cooling effect. I am much more sensitive than my hubs or kids. So glad you loved these!

    1. If you have these allergies I really can’t make any suggestions since I don’t know about any other allergies you may have. My daughter has allergies and we use Google quite a bit. Good luck!

  8. 5 stars
    Oh my goodness these are delish! Thank you so much! I find it easier to make my desserts/snacks in a silicone cupcake pan. After freezing, just pop them out!

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