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    Home » Other Desserts » Keto Peanut Butter Cups

    Published: Aug 2, 2021 by Carolyn

    Keto Peanut Butter Cups

    This post may contain Amazon or other affiliate links. As an Amazon Associate I earn from qualifying purchases.

    34.0K shares
    Jump to Recipe Print Recipe

    These keto peanut butter cups feature a sugar free chocolate shell and a rich, creamy peanut butter center. They’re delicious and easy, so whip up a batch today!

    Eat them plain or use them as garnish on keto peanut butter pie. Sweet and delicious.

    Titled image of a stack of keto peanut butter cups, and the top one has a bite taken out of it.

    Peanut butter is my Achilles heel. It’s my weakness, my downfall, my greatest temptation. And peanut butter cups have long been one of my favorite candies.

    Thank heavens for these keto peanut butter cups so I can indulge without risk. I’ve been making these sugar free treats for about as long as I’ve been low carb. And they’ve saved me many a time when I needed a sweet bite to keep me on track.

    My kids love them too and since they’re so easy to make. Along with my keto peanut butter fudge, we have them around almost constantly.

    A stack of peanut butter cups sits in front of a bowl of peanuts.

    Why make your own keto peanut butter cups?

    I created this recipe back in 2012 because I had no other option. At that time, you couldn’t buy good quality sugar free peanut butter cups like Lily’s or ChocZero. And I do believe I may have been the first person to make them.

    But now that there are several good storebought options, why bother making your own? I have two reasons for you: cost and availability.

    The pre-packaged cups cost about $1 per cup. My recipe makes 16 to 18 cups and comes out to less than 60 cents per cup!

    Additionally, not everyone has access to Lily’s or ChocZero, whereas almost all of us can get our hands on some sugar free chocolate, peanut butter, and a little sweetener.

    And I am one of those weirdos who takes pleasure in making things from scratch. If you are too, then I highly recommend having some fun with this.

    A collage of photos showing the steps for making keto peanut butter cups.

    How to make keto peanut butter cups

    You will need:

    • Candy molds – I recommend these ones because they are the exact same size as the storebought keto peanut butter cups.
    • Sugar free chocolate
    • Cocoa butter or coconut oil
    • Peanut butter
    • Butter
    • Powdered or liquid sweetener
    • Vanilla extract

    Method

    1. Melt the chocolate. As always, I recommend doing this double boiler style to avoid seizing. Adding a little cocoa butter or coconut oil also helps thin the chocolate coating.
    2. Coat the candy molds. You want to use a little over half the chocolate to coat the bottom and sides of each cup.
    3. Freeze the molds. You want that first later of chocolate to firm up properly.
    4. Make the peanut butter filling. Simply melt some peanut butter and butter together, stir in some sweetener, and fill each cup almost to the top.
    5. Freeze the molds again to firm up the filling.
    6. Top with the remaining chocolate. Then freeze or refrigerate until firm.
    Keto peanut butter cups on a white table with peanuts scattered around.

    Frequently Asked Questions

    I don’t eat peanuts, can I make these with almond butter?

    You bet! Any nut or seed butter will work here, including my Homemade Keto Nutella.

    Can I use a different sweetener?

    The filling for these keto peanut butter cups can be made with any sweetener, but it’s important to use powdered or liquid sweeteners to avoid grittiness.

    How do I make them dairy free?

    That’s an easy switch. Be sure to use keto dark chocolate and swap the butter for coconut oil or palm shortening.

    Can I use sugar free milk chocolate or white chocolate?

    Yes but I want to caution you that the white chocolate doesn’t always melt that well and can seize very easily. Watch it carefully and stir constantly.

    I don’t have candy molds, can I use silicone muffin cups?

    Yes you can. If you are using standard muffin cups, they will be larger and you will likely get only 12 cups. Only coat the sides with chocolate about ¼ of the way up.

    Can I use parchment paper liners?

    You can do that too but I recommend placing them into a muffin tin so that they hold their shape.

    I don’t have access to sugar free chocolate, what do I do?

    I have a solution for that! I used to make these keto peanut butter cups with a chocolate shell made from scratch. I have provided those directions in the recipe notes.

    Close up shot of a stack of keto peanut butter cups, and the front one has a bite taken out of it.

    Storage instructions

    I recommend storing these keto peanut butter cups in the fridge in a covered container, but letting them come to room temperature before serving.

    Have some fun baking with keto peanut butter cups

    Obviously, you can just eat them as is, but it’s fun to add them to other keto recipes too. Why not try:

    • Keto Peanut Butter Cup Poke Cake
    • Peanut Butter Cup Cookies
    • Chocolate Peanut Butter Cookie Pizza
    • Keto Peanut Butter Cup Stuffed Brownies
    • Chocolate Peanut Butter Cup Fudge
    A stack of keto peanut butter cups with a bite taken out of the top one.

    Keto Peanut Butter Cups Recipe

    These keto peanut butter cups feature a sugar free chocolate shell and a rich, creamy peanut butter center. They're easy to make so whip up a batch today!
    4.90 from 28 votes
    Print Pin Rate
    Course: Dessert
    Cuisine: American
    Keyword: keto peanut butter cups
    Prep Time: 20 minutes
    Cook Time: 10 minutes
    Cooling Time: 30 minutes
    Total Time: 1 hour
    Servings: 16 cups
    Calories: 112kcal

    Ingredients

    Chocolate Coating:

    • 6 ounces sugar free dark chocolate chopped
    • ½ ounce cocoa butter (or 2 teaspoon coconut oil)

    Peanut Butter Filling:

    • ½ cup peanut butter
    • 2 tablespoon butter
    • ¼ cup powdered Swerve Sweetener
    • ½ teaspoon vanilla extract
    US Customary – Metric

    Instructions

    • In a heatproof bowl set over barely simmering water, melt the chocolate and cocoa butter together, stirring until smooth.
    • Use the back of a small spoon to spread a little over half of the chocolate mixture on the bottom and up the sides of the candy molds. Freeze 10 minutes.
    • In a microwave safe bowl, melt the peanut butter and butter together on high in 30 second increments, stirring until smoth. Whisk in the powdered sweetener and vanilla extract.
    • Remove the chocolate cups from freezer and fill almost to the top with the peanut butter mixture, leaving enough space to cover with remaining chocolate. Return to freezer for another 10 minutes or so.
    • Rewarm the remaining chocolate gently over low heat and stir until smooth. Spread over the peanut butter filling to the sides of each cup. Chill until set, 20 minutes.

    Notes

    If you do not have sugar-free chocolate available to you, you can make your own. It’s not quite as good but it works!
     
    Chocolate Coating:
    • ¼ cup butter
    • 3 oz unsweetened chocolate
    • ¼ cup powdered Swerve
    • 2 tablespoon cocoa powder
    • ½ teaspoon vanilla extract
      In a small saucepan over low heat, melt the butter, unsweetened chocolate and sweetener together, stirring until smooth. Stir in the cocoa powder and vanilla.Let cool 5 to 10 minutes, until somewhat thickened, the proceed as directed. 
    Nutrition Facts
    Keto Peanut Butter Cups Recipe
    Amount Per Serving (1 cup)
    Calories 112 Calories from Fat 90
    % Daily Value*
    Fat 10g15%
    Carbohydrates 6.1g2%
    Fiber 2.5g10%
    Protein 2.3g5%
    * Percent Daily Values are based on a 2000 calorie diet.

    34.0K shares

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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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      Recipe Rating




    1. Roberta says

      June 14, 2022 at 9:46 pm

      5 stars
      So good! Thank you ????

      Reply
    2. Gail O says

      April 19, 2022 at 12:35 am

      5 stars
      Another hit out of the park! My niece (who is not keto and a size 2) did not believe they were sugar-free and keto friendly…she ate 6 of them. I think she would have eaten more if more had been out. They are better than ANY store bought keto peanut butter cup.

      Reply
    3. Patti Sani says

      January 17, 2022 at 2:18 pm

      Just made these in standard silicone muffin cups and they came out really tasty, but also really funky looking! I used Lily’s semisweet chips and coconut manna for the chocolate coating and that worked well. My husband loved these and said I could make them to have on hand all the time, so I’ve just ordered the molds you recommend to make them next time. Thanks for all your great recipes and tips!

      Reply
    4. Cheryl W says

      January 15, 2022 at 8:38 pm

      5 stars
      These were really easy to make, and everyone loved them! I didn’t have candy molds so I used a muffin pan, still came out great.

      Reply
    5. Alice says

      September 25, 2021 at 5:35 pm

      5 stars
      Love love love!!!
      Made these lots of times!!!
      Thank you Carolyn

      Reply
    6. Beth says

      September 18, 2021 at 3:31 pm

      5 stars
      These have been an absolute hit here and are gone so fast! I love how easy and that they are keto too. Absolutely loved!

      Reply
    7. Samantha says

      September 18, 2021 at 9:36 am

      5 stars
      Reese’s Peanut Butter Cups are my husband’s favorite, but now I make these for him instead! So so yummy and it makes me feel good that the ingredients are better. Thank you for the recipe!

      Reply
    8. Matt Taylor says

      September 18, 2021 at 9:07 am

      5 stars
      These Keto Peanut Butter Cups are awesome and make great fat bombs too. 10g of Fat and 3.6 net carbs, pretty awesome for an amazing treat. Great recipe!

      Reply
    9. Julee says

      September 16, 2021 at 9:31 pm

      5 stars
      What’s not to love? Peanut butter + chocolate!!! Thanks for the great recipes! 🙂

      Reply
    10. Karen P says

      August 24, 2021 at 6:00 am

      5 stars
      Delicious and easy to make.

      Reply
    11. Jeff says

      August 22, 2021 at 12:51 pm

      What is the best sugar free dark chocolate to use, and what percentage of cocoa in the chocolate???…Thank you much for your time
      Jeff

      Reply
      • Carolyn says

        August 22, 2021 at 1:34 pm

        Depends on your preference. I indicated which ones I like best in the post 🙂

        Reply
        • Amanda says

          October 30, 2021 at 8:59 am

          The chocolate link in the recipe doesn’t work anymore. I know it can be impossible to keep all those up-to-date when you’re linking to an outside source, but I really appreciate you taking the time to link to your preferred ingredients & kitchen gadgets. It’s hard to go wrong when you’re spoon-feeding us the details!

          Reply
    12. Michelle Walker says

      August 22, 2021 at 8:28 am

      5 stars
      Umm, these are absolutely delicious! They taste BETTER than Reese’s. I’m so thankful. My husband just started Keto and it makes me so happy that I can elevate his mood and show him how sustainable Keto can be.

      Reply
    13. Alice says

      August 17, 2021 at 6:06 pm

      5 stars
      Love love these. I’m like you Carolyn, I love love chocolate and peanut butter, so yummy.
      This is the best combination of the two.
      Thank you for all your hard work

      Reply
    14. Becky Knapp says

      August 17, 2021 at 2:47 pm

      I make the wall the time but just use smuckers natural pb and don’t really need sweetener at all. ( Just chill pb then spoon in & flatten little with my fingers. So yummy

      Reply
    15. Liza says

      August 17, 2021 at 2:05 pm

      Carolyn have you ever made these with PBFit or something similar?

      Reply
      • Carolyn says

        August 17, 2021 at 2:12 pm

        Not the cups, no. I have PB eggs that are made with peanut flour.

        Reply
    16. KIM says

      August 13, 2021 at 2:33 pm

      I can’t wait to make these! Thank you for all your really great recipes!

      Reply
    17. Lori says

      August 05, 2021 at 8:36 pm

      Hi! When you calculate the macros, do you subtract out the Sweetener?

      Reply
      • Carolyn says

        August 05, 2021 at 9:16 pm

        Yes, if you read my nutritional disclaimer at the bottom of every post, I talk about that.

        Reply
    18. Crystal says

      August 03, 2021 at 9:49 pm

      These are fantastic! I’ve been eating keto for about 2 years and have tried and failed to make enjoyable desserts. I discovered your blog a couple of months ago and it’s been a game-changer. I’ve been making one or two of your recipes each day during the summer break and food is exciting again! I’m so grateful that you’re sharing your keto baking and cooking expertise! Thank you!

      Reply
      • Carolyn says

        August 04, 2021 at 9:19 am

        THAT, my dear, is my goal… to make keto fun again! I am so very glad it helps. <3

        Reply
    19. Jennifer says

      August 03, 2021 at 1:36 pm

      5 stars
      Another reason to make your own: they are much more delicious than the store bought!!

      Reply
    20. Christiane says

      August 03, 2021 at 12:39 pm

      5 stars
      Thanks for this recipie ! It’s so good 🙂 all your recipies are delicious and I refer to your site my friends keto ! Thanks for your creativity and help others to be healthy !

      Reply
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