Keto Peanut Butter Cookies – 4 Ingredient Low Carb Dessert Recipe!

It’s simple: to make keto friendly cookies, use keto friendly ingredients. And, what ingredient could be more keto friendly or more cookie friendly than PEANUT BUTTER?! These keto peanut butter cookies are flourless, sugar free, and so simple to make.

You only need three ingredients: peanut butter, powdered sweetener, and an egg! Definitely the kind of low carb cookies you can make ALL the time. And, each of these keto peanut butter cookies has only 2 grams of net carbs—along with 9 grams of fuel-filled fat and 5 grams of satiating protein!

They’ve got all the creamy, buttery, salty sweet goodness of traditional peanut butter cookies, just without the carbs and sugars. And, by making simple substitutions to keep these peanut butter cookies low carb, we end up cleaning up the ingredients list, too!

Gluten Free & Flourless Peanut Butter Cookies

Whether you’re looking for clean cookies, gluten free cookies, grain free cookies, or low carb cookies recipes, the refined flours in traditional cookies have to go. Refined grains aren’t just high in carbs, but also lacking in nutrients and bad for blood sugar!

So, many low carb cookies use a low carb flour alternative, like almond or coconut flour. Luckily, with keto peanut butter cookies, you don’t even need ANY kind of flour at all!

The natural, thick gooeyness of peanut butter gives these low carb cookies a rich, dense texture on its own. Plus, it packs a punch of crave-able salty flavor into your keto cookies!

Sugar Free & Low Carb Peanut Butter Cookies

Low calorie, low carb sweeteners are the ideal option for truly low carb desserts. Including these keto peanut butter cookies! But, I highly recommend using a natural low calorie, low carb sweetener—like stevia or erythritol—rather than artificial sweeteners.

Stevia and erythritol come from plants and foods found in nature, unlike artificial sweeteners which are made in a lab. And, these natural low calorie sweeteners can provide the sweetness needed in low carb desserts WITHOUT the carbohydrates and blood sugar consequences.

In my keto peanut butter cookies, I used a sugar free low carb powdered sweetener, which is made from erythritol. You could use a granulated low carb sweetener, but I really think a powdered sweetener works best to get that dense, creamy, crumbly texture.

I buy my low carb powdered sweetener online, but it can be a bit expensive. Instead, you can easily make your own stevia powdered sugar or powdered erythritol at home with a blender! Those few bucks will add up, giving you the freedom to whip up keto peanut butter cookies anytime—without breaking the bank!

Fuel-Filled Keto Peanut Butter Cookies!

Potent, peanut-buttery flavor, crispy edges, lusciously creamy in the middle—these keto peanut butter cookies may be better than the traditional!! (You’ll have to give ‘em a whirl and weigh in with your opinion…) In all seriousness though, I did NOT expect a low carb cookies recipe to turn out this amazing.

And, I especially love how hearty, satisfying, and nutritious these keto peanut butter cookies are, but with so few ingredients! I mean, five grams of protein in an all-natural, healthy, low carb cookie?! That’s what I’m talkin’ about!

But, the most important component in keto cookies: the dietary fats. Between the peanut butter and the egg, each of these keto peanut butter cookies can fuel you up with nine grams of wholesome fats!

Keto Peanut Butter Cookies

Keto Peanut Butter Cookies

4.67 stars (3 ratings)


  • 1 cup peanut butter
  • ½ cup powdered low-carb sweetener, to taste (powdered works best—you can make your own by putting granulated sweetener in the blender)
  • 1 egg
  • salt, if peanut butter is not salted


  • Preheat oven to 350°F (180°C).
  • In a large mixing bowl, combine all ingredients and beat together with a hand mixer.
  • Scoop out dollops of dough and transfer to a baking pan lined with parchment. (I used a regular 4-teaspoon cookie scoop to portion my cookies!)
  • Press down on top of each cookie with a fork to create a crisscross pattern.
  • Bake 12-14 minutes. Don’t let them brown too much—they’ll burn quickly!
  • Remove from oven and transfer to baking rack. Allow to cool 15 minutes before serving and enjoying!
  • Yields 14 keto peanut butter cookies.


*Per 1 keto peanut butter cookie: 2g net carbs.
Serving: 1keto cookie, Calories: 113kcal, Carbohydrates: 4g, Protein: 5g, Fat: 9g, Fiber: 2g, Sugar: 1g
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