Keto Peanut Brittle – Sugar Free Recipe, Sweet, Low Carb & Delicous

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This easy Keto Peanut Brittle is our take on the classic candy found at fetes, fairs, and markets, this version is very low-carb and sugar-free, yet still crunchy and sweet.

Keto Peanut Brittle - delicious sugar-free candy recipe
Keto Peanut Brittle

Not a fan of peanuts? No worries, just swap them out for your preferred roasted nuts.

This Low Carb Peanut Brittle recipe makes 4 serves. 1 serving contains 2g net carbs.

Keto Peanut Brittle Sugar Free Ingredients

Keto Peanut Brittle Ingredients - delicious sugar-free candy recipe
Keto Peanut Brittle Ingredients

How to Make Keto Peanut Brittle

How to make Keto Peanut Brittle - delicious sugar-free candy recipe
How to make Keto Peanut Brittle
  1. Line a cookie sheet with parchment paper and evenly spread out the peanuts.
  2. Place the butter, swerve, and vanilla essence in a small saucepan over medium-high heat.
  3. Cook the mixture to caramel stage, it should be a deep brown color. Note that undercooking the caramel will leave your brittle grainy.
  4. Pour the caramel over the peanuts and leave to cool completely around 30-50 minutes.
  5. Break the cooled brittle into pieces and serve.
Keto Peanut Brittle - delicious sugar-free candy recipe

Keto Peanut Brittle - Sugar Free Recipe

This easy Keto Peanut Brittle is our take on the classic candy found at fetes, fairs and markets. Our version is sugar-free, yet still crunchy and delicious!
4.97 from 100 votes
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Course: Snack, Snacks
Cuisine: American, British
Cook Time: 10 mins
Cooling: 30 mins
Total Time: 45 mins
Servings: 4 servings
Calories: 316kcal
Author: Gerri

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Ingredients

Instructions

  • Line a cookie sheet with parchment paper and evenly spread out the peanuts.
  • Place the butter, swerve and vanilla essence in a small saucepan over medium-high heat.
  • Cook the mixture to caramel stage, it should be a deep brown color. Note that under cooking the caramel will leave your brittle grainy.
  • Pour the caramel over the peanuts and leave to cool completely, around 30-50 minutes.
  • Break the cooled brittle into pieces and serve.

Nutrition

Calories: 316kcal | Carbohydrates: 5g | Protein: 10g | Fat: 29g | Saturated Fat: 10g | Cholesterol: 30mg | Sodium: 259mg | Potassium: 283mg | Fiber: 3g | Sugar: 1g | Vitamin A: 355IU | Calcium: 40mg | Iron: 0.8mg
Keto Peanut Brittle Recipe - delicious sugar-free candy recipe on a sheet ready to eat
Keto Peanut Brittle recipe is delicious low-carb, sugar-free candy that you can learn how to make at home

How To Store Keto Peanut Butter Brittle

Store leftover Low Carb Peanut Brittle in an airtight container at room temperature for up to 5 days. It can also be stored in the fridge or freezer.

Want more great sweet treats? Try some of our other great Keto Candy Recipes;

To make a larger batch of this Keto Peanut Brittle recipe adjust the servings above.

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33 thoughts on “Keto Peanut Brittle – Sugar Free Recipe, Sweet, Low Carb & Delicous”

  1. 5 stars
    I made this for a Christmas party and people who weren’t eating keto loved it and came back for seconds! Thank you so much!

    Reply
    • Hello Christine and Merry Christmas to you. Thank you for your feedback so glad it was a hit at your Christmas party. It’s always good when people come back for seconds.

      Reply
  2. 5 stars
    I made this using olive oil butter since my husband is dairy-free and monk fruit sweetener instead of swerve. It turned out great. My only input is if you are using a black pan to make the sauce then be weary it will look like it’s dark brown because of the color of the pot before it actually turns brown.

    Reply
  3. 5 stars
    I cannot wait to try this, as I am addicted to sugar-laden toffee peanuts. I am going to use an erythritol and stevia mix I make myself and keep on hand instead of the Swerve. I hope it turns out well!

    Reply
  4. Almost followed this recipe but only had liquid Stevie handy. Took advice not to undercook. Mine seemed watery and after letting it set up over an hour the color was no translucent but cloudy. Where did I messed up?

    Reply
    • Hi Lisa,

      The problems you have are caused by swapping a granulated sweetener for a liquid one. Liquid and granulated are not interchangeable in a lot of recipes, and this is one of them. I hope you try it again with a granulated sweetener, I’m sure it will turn out perfectly!

      Reply
  5. I tried another recipe, wasting 3 sticks of butter, and then found this. YAY! Your recipe worked great! I was careful not to get it to the “ghee” stage, where the dark dust forms on the bottom of the pan. EXCELLENT!

    Reply
  6. Hiya really would like to make this. Could I use mixed keto friendly nuts such as almond pecan pistachios and macadamian?

    Reply
  7. Swerve has 1gram of carbs per gram, and 3oz of swerve is 85grams so 85 carbs..
    Divide that into 4 servings as you’ve suggested, means that component alone is 21carbs per serving? Am I missing something here?

    Reply
    • Hi Ravi,

      The 1g of carbs is actually 1g of erythritol. Swerve is zero carbs as erythritol is a sugar alcohol and subtracted from the total carb count.

      Reply
  8. 5 stars
    Loved this! Finally, an easy keto dessert I can successfully make! Because, we’re Virginians we have the most plump and crunchy peanuts, too. Great recipe… I’ve made it two days in a row now. Today, I added Lily’s dark chocolate chips to it. 🙂

    Reply
  9. Hi there! Would I be able to use a non dairy butter or ghee? I’ve recently been diagnosed with a dairy allergy.

    Reply
    • Hi Diana,

      It’s the caramelized sugar that makes traditional brittle crunchy, no need to add baking soda to our recipe.

      Reply
    • 5 stars
      My dad had a microwave peanut brittle recipe that I’m planning to adapt to Swerve and sugar-free honey (to replace the white Karo in the original). It calls for baking soda, which makes the candy foam up a bit before it cools, which makes it not quite so much like peanut Jolly Ranchers – it’s softer, and less likely to glue your teeth together.

      Reply
  10. Hi there,
    I have made low carb sugar-free brittle before but I would like to try your recipe , but I do have a question. It seems to me that 2 ounces of butter which is a 1/4 cup is very little to 3/4 cup of sugar. That doesn’t seem like it will be enough to even spread over an entire cookie sheet. Am I missing something? Thank you

    Reply
    • Hi Monika,

      The recipe is correct, you are not missing anything. Also noting the recipe calls for 3 ounces of sweetener, not 3/4 cup 🙂

      Reply
  11. I notice you use vanilla essence in some recipes. Can I use pure vanilla extract? IS it ok to use monk fruit in place of the swerve?
    Thanks for the great recipe ideas!

    Reply
    • Hi Carol,

      Vanilla extract and essence can be used in place of each other, just note that some extracts are made with glucose. I haven’t used monk fruit sweetener so I can’t be sure that it will work for this recipe – you can use straight erythritol though.

      Reply
      • I used lakanto monk fruit sweetner with canola harvest margarine and Watkins baking vanilla. Cooks different than Swerve. I cooked it until it was smoking and spooned over walnuts. In my opinion it was much better. Did not have the swerve super sweet taste.

        Reply
  12. I used Splenda in place of swerve. This recipe didn’t get hard and just tasted like buttered peanuts.

    Reply
    • Hi Donna,

      That would be because Splenda is not an erythritol based sweetener, and it also contains maltodextrin and dextrose – both ingredients are “fillers” which are not suitable to make a caramel. Try again with swerve for best results!

      Reply

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