Name: 3 Ingredient Keto Peanut Butter Cookies
Prep time: 5 min
Cook time: 10 min
Total time: 15 min
Yield: 17
Ingredients: 1 cup natural peanut butter; 1/2 cup confectioners swerve or swerve brown sugar replacement; 1 large egg; 1/8 teaspoon of salt, optional

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Last Updated on July 27, 2023 by Toya

Learn how to make these easy, and delicious 3 ingredient keto peanut butter cookies in just 15 minutes! These soft peanut butter cookies only contain 2.8 grams of net carbs per serving!

Keto peanut butter cookies

When it comes to making cookies on keto, the easier the recipe the better…at least for me. I’ve made many keto cookies before, including my famous simple butter cookies and I love them all, but this one has a special place in my heart.

Mainly because it’s very easy to make, as it uses just 3 ingredients, but also, because it tastes so damn good and it’s very low in carbs!

Ingredients for keto peanut butter cookies

1 cup natural peanut butter
1/2 cup confectioners swerve or swerve brown sugar replacement
1 large egg
1/8 teaspoon of salt, optional

How to make 3 ingredient keto peanut butter cookies

Measure out all the ingredients and place them in a large mixing bowl.

Then mix the peanut butter, swerve and the egg together in a bowl until well combined. The mixture should be crumbly and not too wet like this:

Then scoop out 1 tablespoon of cookie mixture per cookie, and roll into a ball. Place each on a baking sheet lined with parchment paper.

Use a fork to very gently add fork marks to each cookie.

Next, bake these peanut butter keto cookies in the oven at 350°F for 8-10 minutes.

This batch makes 17 peanut butter cookies measuring about 3 inches each.

Let the cookies cool and set, as they’re soft and crumbly immediately out of the oven.

Serve with a glass of warm almond milk.

Tips for making the best peanut butter cookies

When using the fork to add the marks to the cookies, do so very gently, or else the cookie will crumble and break apart.

Once the cookies have been baked, they will be very soft and crumbly directly out of the oven. Let them cool for about 5-10 minutes before touching or eating them to avoid them falling apart.

These cookies were made with low carb peanut butter, egg, and a low carb sweetener. However, if you have any food extracts such as vanilla extract or maple extract on hand you can also optionally add 1/2 tsp for some flavor.

Also, while salt is an optional ingredient in this recipe, adding a pinch of salt will really help to develop the flavor of these low carb peanut butter cookies. So, feel free to add a pinch of salt to the cookie dough.

I used Justin’s natural peanut butter for this keto peanut butter cookie recipe. This peanut butter brand is keto-friendly, has only 5 grams of carbs per serving, and has zero added sugars.

However, there are some other brands that can work for this recipe too. These include brands like Crazy Richard’s 100% Natural Creamy Peanut Butter, Spread The Love NAKED Organic Peanut Butter or 365 by Whole Foods Market unsweetened peanut Butter, and a few others that are natural, unsweetened, or sugar-free.

Is jif peanut butter low in carbs?

Many people like to use Jif peanut butter since this is a brand they grew up knowing and using.

And, while not all Jif peanut butter is the same when it comes to sugar content, Jif does have a natural peanut butter option that some people do tend to use on keto.

While Jif Natural Creamy Peanut Butter Spread contains 90% peanuts and has just 8 grams of carbs and 3 grams of fiber per serving, it also does have some added sugars and molasses which are all ingredients you should avoid if you’re doing keto.

Also, I’ve tried these keto cookies made with peanut butter on many occasions and with a few different sweeteners. I have used Swerve granulated sweetener, as well as monk fruit sweetener, confections Swerve and swerve brown sugar replacement. I enjoy these cookies with swerve brown sugar replacement the most, but you can always use some other types of keto friendly brown sweeteners too.

Variations of keto peanut butter cookies

Now, if you like these peanut butter cookies as they are then great. However, if you like to make variations with other keto-friendly ingredients, then adding some Lily’s chocolate chips to this batch of keto cookies can take the recipe up a notch.

To make some easy 4 ingredient keto peanut butter cookies, simply add your desired amount of sugar free chocolate chips to the cookie batter, mix well, and follow the same instructions above to make these chocolate peanut butter cookies that are sugar free and keto!

Storing and freezing peanut butter cookies

How to store. Cool the cookies. Once cooled, place them in an air tight container that closes tightly and store them for up to a week at room temperature. Also, you can keep them in the fridge for up to a month.
How to freeze. Cool the peanut butter cookies. Once cooled, place them on a baking sheet in a single layer, and freeze for 1 hour. Remove the frozen cookies from the baking sheet, wrap them in parchment paper, then place them in a freezer bag and freeze them for up to 4 months.
How to reheat. Reheat frozen or thawed cookies by placing them in an oven heated to 250°F for 5-10 minutes.