Easy 3 Ingredient Keto Peanut Butter Cookies – Low Carb & Sugar-Free

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These Keto Peanut Butter Cookies are low-carb, sugar-free, effortless to make. They need only 3 ingredients:  sugar-free peanut butter, egg, and sugar substitute. Enjoy gluten-free cookies at just 3g net carbs each that are ready in under 20 minutes!

sugar free peanut butter cookies

Ingredients for Keto Peanut Butter Cookies

The best flourless peanut butter keto cookies are made with smooth natural peanut butter, a powdered sugar replacement, and one egg. These are all the ingredients you need to make some sugar-free peanut butter cookies that are also paleo-friendly:

You can add a fourth ingredient to bring these peanut butter cookies to the next level: unsweetened dark chocolate chips. I have another fantastic recipe for double chocolate flourless cookies that I think you’ll love to try!

Everyone will love these easy keto peanut butter cookies!

How to Make Keto Peanut Butter Cookies?

The instructions for this recipe are pretty easy for this recipe. Here’s all you have to do:

  1. Process Erythritol or Monk-fruit into a coffee grinder or Nutribullet until it turns into a powder. If you have powdered sweetener in your pantry, skip this step.
  2. In a large bowl, combine well all the ingredients
  3. Using a spoon scoop out the dough and make 1-inch cookie balls.
  4. Place them on a lined baking sheet lined with parchment paper. Use a fork to create that crisscross shape on top of each cookie.
  5. Bake them for about 10-12 minutes or until they look done on top and start to smell incredibly delicious.
keto flourless cookies

These keto cookies are ready in 20 minutes with minimal effort and are super soft and chewy.

It’s one of the quickest keto desserts you can make!

If you like sugar-free desserts as I do, I bet you’ll love my delicious keto brownies recipe that’s ready in 20 minutes.

I love these peanut butter cookies because they are flourless, gluten-free extremely easy to make and they don’t fall apart while remaining soft on the inside.

3 ingredients peanut butter cookies

Tips for the Best Flourless Peanut Butter Cookies

  • Let the peanut butter cookies cool down for at least 15 minutes before serving as they are very crumbly straight out of the oven.
  • If after combing all the 3 ingredients for the low carb peanut butter cookies and the dough looks too sticky, refrigerate for 10 minutes before rolling it into delicious cookies.
  • Make sure that the cookies don’t touch because they slightly spread when cooking.
  • Don’t try to add any kind of flour, because these are flourless cookies that need only 3 ingredients.
  • You can substitute the peanut butter with any unsweetened nut butter such as almond butter or cashew butter.
keto peanut butter cookies recipes

What’s the Best Sweetener to Use for the Keto Peanut Butter Cookies?

You’ll need to use a powdered sweetener. I love to use Swerve Confectioners sweetener and blend in a food processor until it looks like a powder.

You can use Monk Fruit Sweetener and adjust the quantity to your taste.

Don’t use STEVIA when baking because, in my opinion, it makes the chocolate cookies bitter.

keto cookies 3 ingredients

How Many Carbs are in these Sugar-free Cookies?

Each of these sugar-free delicious peanut butter cookies is 3g net carbs. This is a fantastic treat to have on a ketogenic diet.

I feel extremely satisfied with eating only one peanut butter cookie. If I feel like it, I’ll enjoy another one along with a cup of keto coffee or bulletproof tea.

Other Delicious Cookies You Might Like:

keto peanut butter cookies recipes

Easy 3 Ingredient Keto Peanut Butter Cookies – Low Carb & Sugar-Free

5 from 5 votes

Prep time 5 mins
Cook Time 12 mins
Yelds 12 cookies
Author Ioana Borcea from LowCarbSpark.com


Keto Peanut Butter Cookies – Low-Carb, Gluten-Free cookies that need only 3 ingredients. Enjoy a dairy-free and paleo dessert that’s ready in 15 minutes.
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  • Preheat your oven to 350°F.  Line a baking sheet with parchment paper or with a silicone baking mat and set aside.
  • Using a coffee grinder, turn the sweetener into powder.
  • In a large bowl combine the peanut butter, the sweetener, and egg until all incorporated.
  • Using your hands roll the dough into 1 inch balls. Place each ball of cookie dough on the baking sheet. Gently press down on the top of each cookie, with a fork to make a small criss-cross pattern.
  • Bake for 10-12 minutes or until the tops look set. Let them cool down for at least 10 minutes before serving.


If after mixing all the ingredients the keto cookie dough is too sticky refrigerate it for 10-15 minutes. You should be able to form cookies with your hands.
Nutrition Facts
Amount per serving.
Total Carbs
Net Carbs

How do we calculate the nutrition info?

These nutrition facts listed are determined using nutrition information from the USDA Food Database. Our nutrition facts are accurate, but if you are using different products, please make your calculations. Net carb count is calculated by subtracting both fiber and sugar alcohols because they don’t raise blood sugar.

Course Dessert
Cuisine American
Keyword peanut butter cookies
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Easy 3 Ingredient Keto Peanut Butter Cookies - Low Carb & Sugar-Free


The full recipe is in the recipe card below. Readers that love this aslo made these recipes:


Ioana is a food and travel lover. Her greatest passion is developing mouthwatering recipes that are comforting, easy to make, and budget friendly! She firmly believes that cooking should be fun! About me...

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Recipe Rating

  1. Looking forward to trying thus recipe. I have monkfruit/erythritol blended sugar. Will this work? There are some words missing in your Comments about using monk frUit instead of erythritol.

About me

Hello! My name is Ioana Borcea, and I'm here to provide you with mouthwatering recipes. This blog is all about sharing my favorite tested easy to make, delicious low-carb & keto, nutrient-dense recipes.

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