Plain Flourless Peanut Butter Cookies

Plain Flourless Peanut Butter Cookies

These plain flourless peanut butter cookies are made simply with just 5 regular pantry ingredients, and have that crispy outside and soft and chewy inside. Use a sugar substitute and they’re an amazing low-carb cookie!

Closeup image of flourless peanut butter cookie on rack

Is peanut butter gluten free?

In its most pure form, peanut butter is made of peanuts and salt and is naturally gluten free. If you place peanuts (roasted or raw) in a high-speed blender and add salt to taste, eventually you will have peanut butter. 

I rarely make my own peanut butter, though, and typically don’t bake with truly natural peanut butter. You’ll know that your peanut butter is entirely natural when it has only those two basic ingredients, and when it separates as it stands at room temperature into a ring of liquid oil on top and a solid below. 

Instead of baking with that sort of natural peanut butter, I prefer to bake with “no-stir” peanut butter that doesn’t separate and therefore doesn’t need to be stirred before using. Typically, that sort of peanut butter has some sugar and some shortening or other more solid oil blended into it. 

The original ingredients (peanuts, salt) are naturally gluten free, as are all of the potential additives we’ve mentioned. But commercially prepared peanut butter can be unsafe on a gluten free diet if it’s become contaminated at any point during the manufacturing process.

All of this is to say that, to make sure you’re using a gluten free peanut butter in this recipe or just in a sandwich, you have to read labels—and know your brands. Some brands, like Jif, will label its peanut butter (and other products) “gluten free” if it fit the U.S. definition of “gluten free,” but may have been prepared on manufacturing equipment that has been shared with gluten-containing products. 

Most types of Skippy peanut butter are gluten free, except for those that contain other ingredients. The safest peanut butter brands only make gluten free varieties, like Peanut Butter & Co.  Most often, I purchase Skippy peanut butter for my family, but you have to do what makes you most comfortable—and fits in your budget.

Hand pressing a fork into cookie dough

A classic cookie, rebalanced

The most classic recipe for flourless peanut butter cookies is simply 1 egg + 1 cup peanut butter + 1 cup granulated sugar. But that makes a cookie that’s much more fragile, more crunchy than chewy and has those jagged, cracked edges.

When I first made flourless peanut butter cookies, I was only satisfied with a chocolate flourless PB cookie. It was the only way I could make them soft and chewy.

I finally decided to revisit the classic “3-ingredient” peanut butter cookie version—and make it right. By cutting back on the sugar and adding a bit of baking powder, the cookie held together so much better. I was even able to create the classic crosshatch pattern in a flourless cookie without getting those broken edges.

Raw shaped flourless peanut butter cookies on tray

Beat that batter

It’s mostly the balance of ingredients that creates the proper texture in the cookie that’s crispy outside and chewy inside. But beating the batter a bit extra helps, too.

In a traditional cookie made with flour, creaming butter (or other fat) with sugar creates a bond between the two that allows the heat of the oven to cause them to rise and crisp. If you want crispy-chewy flourless peanut butter cookies, try beating the batter a bit more.

Most often, I make this recipe with a bowl and a spoon. I don’t bother with a handheld or stand mixer. But the few times that I have bothered, the cookies have the absolute very best texture.

The granulated sugar on the outside of the cookies is absolutely optional. But it does help create a bit of a crust on the outside. And you really don’t need much granulated sugar to make that sort of magic happen. ✨

5 Flourless peanut butter cookies on a cooling rack

Ingredients and substitutions

These plain flourless peanut butter cookies are already dairy-free and gluten free naturally, with only a few ingredients. The secret to their crispy and chewy success is in the balance of ingredients. So keep that in mind as you consider whether to make changes to the recipe.

Peanut butter

Since these are peanut butter cookies, if you don’t like nut butter, I suggest you stay away! These are really for peanut butter lovers.

If you’re allergic to peanuts, you can certainly try replacing it with a no-stir variety of almond butter (Barney Butter is a good (if expensive) option). Either way, you’ll need a “no-stir” variety.

That just means that, when you open the jar, the liquid oil hasn’t separated from the solid nut butter. It’s all integrated (and not drippy). Cashew butter might also work, as long as it’s no-stir. I don’t think that any of the other, more alternative nut-replacement butters would work.

Nutella is just a different ingredient entirely, so don’t try that here. But you could use it to make my 3-ingredient Nutella cookies. Those are addictive.


You could try replacing the egg in this recipe with a “chia egg” each (1 tablespoon ground chia seeds + 1 tablespoon lukewarm water, mixed and allowed to gel). The egg really does help to hold this recipe together and make it puffy and chewy rather than crunchy.


I’ve made this exact recipe with a granulated sugar substitute and although the texture wasn’t spot on, it worked. I used Lankato brand monkfruit granulated sweetener. Made that way, the cookies are low carb, high protein and really satisfying.

Flourless peanut butter cookies raw with a fork marking them, overhead on a rack, and closeup on a rack

Like this recipe?

Prep time: Cook time: Yield: 12 cookies


1/2 cup + 2 tablespoons (125 g) granulated sugar, plus more for topping

1 cup (256 g) smooth no-stir peanut butter

1 egg (50 g, weighed out of shell), at room temperature, beaten

1/8 teaspoon baking powder

1/4 teaspoon kosher salt


  • Preheat your oven to 350°F. Line a large rimmed baking sheet with parchment paper and set it aside.

  • In a large bowl, place the granulated sugar, peanut butter, and egg, and mix to combine very well. Using an electric mixer (hand or stand mixer) will help get the perfect cookie texture, but it’s not necessary. Add the baking powder, and salt, and mix again to combine.

  • Divide the dough into portions of 1 1/2 tablespoons each (a #50 ice cream scoop works great), and place about 1 1/2-inches apart from one another on the prepared baking sheet. Roll each piece of dough between clean palms, and return to the baking sheet. For thicker cookies, place the baking sheet in the freezer to chill for about 10 minutes. Wet the tines of a salad fork, press into the extra granulated sugar, and then press into a crosshatch pattern on each piece of cookie dough. Wet the fork as often as necessary to prevent it from sticking to the cookie dough. You can just use the wet tines without the sugar if you prefer.

  • Place the baking sheet in the center of the preheated oven and bake for 8 to 10 minutes, or until the cookies are puffed and the dough no longer glistens on top (although the granulated sugar will glisten where it has clumped). Remove from the oven and allow to cool for 10 minutes on the baking sheet or until firm.


Comments are closed.

  • Annie
    August 20, 2020 at 6:44 PM

    I have made this same recipe w/Adams natural PB and duck egg; I just increased the sugar and PB a little to acomodate the lgr egg and the natural PB worked just fine. I have also used homemade mixed nut nutbutter which also worked. I add Chia to my homemade butter to help w/separation.

  • Sandy
    August 16, 2020 at 11:38 AM

    Out here in Washington state I’ve discovered a delicious brand called CB’s Nuts whose peanut butter is no stir, but with no added ingredients. They call it “creamunchy”, but it’s pretty smooth. As soon as the heat wave here breaks I’ll try these. Thanks!

    • Nicole Hunn
      August 16, 2020 at 1:18 PM

      Interesting, Sandy. It’s hard to imagine how they would do that!

  • Eileen
    August 16, 2020 at 10:05 AM

    I have made these with Neat Egg & and added a teaspoon of oil. They turned out great.

  • Ann Legere
    August 16, 2020 at 9:00 AM

    These cookies are awesome, Nicole! Thanks once again from Truro, Nova Scotia.
    Ann Legere

    • Nicole Hunn
      August 16, 2020 at 1:17 PM

      So glad, Ann. Thanks for letting me know you’re writing from Nova Scotia!

  • Mrs Marilyn Ormson
    August 16, 2020 at 8:43 AM

    I assume you use unsweetened peanut butter? Smooth or with bits?

    • Nicole Hunn
      August 16, 2020 at 1:16 PM

      The recipe calls for smooth no-stir peanut butter, Marilyn. I describe what I mean by that in the post!

  • Kerri
    June 5, 2018 at 9:26 AM

    Hello Nicole
    I am wondering you No Stir Peanut Butter, what is the equivalent called in Australia? Is No Stir Peanut Butter a brand or something else? We have Peanut Butter and our major brands for this is Kraft or Bega. I am not sure what No Stir Peanut Butter is. I tried googling it and came to no avail. If you could enlighten me I would really appreciate it thank you.

    • Nicole Hunn
      June 5, 2018 at 12:47 PM

      Hi, Kerri, So sorry that wasn’t clear! By ‘no-stir,’ all I mean is that the oil doesn’t separate out of the mixture at room temperature like many truly natural nut butters do. Basically, you need more of a processed peanut butter. Does that help?

  • Suzanne Lichtenstein
    June 4, 2018 at 9:27 PM

    I’m so excited to try these! We will be using Sunbutter, and I expect it will work. Why do you recommend the no-stir peanut butter? We usually just stir up the Sunbutter, then refrigerate it to prevent oil separation.

    Another trick is to mix honey with the Sunbutter or other nut-butter. Then, it does not need refrigeration; but, of course, it is very sweet. We have not experimented to learn what the lowest ratio of honey to nut-butter must be in order to prevent separation.

    What do Barney Butter and the others do to prevent separation at room temperature?

    • Nicole Hunn
      June 5, 2018 at 8:08 AM

      Hi, Suzanne, I’m afraid I really don’t know what they do to prevent separation, but I suspect that they process it with shortening or another type of fat.

  • Angela
    May 31, 2018 at 1:52 PM

    My daughter was diagnosed with celiac and I’ve tried many recipes but I have to say that yours are spot on every time. I am able to make for her the things she liked without the gluten and I thank you for all your effort and hard work
    I haven’t attempted breads as I’m afraid I’ll fail, maybe soon
    I will try these cookies tomorrow and I’m sure she’ll love them too

  • Olivia
    May 31, 2018 at 12:13 PM

    I think these will work with Sunbutter. My son has a peanut allergy and I’m gonna try! Thanks!

    • Nicole Hunn
      May 31, 2018 at 2:23 PM

      If he has a peanut allergy but can have almonds, I’d try Barney Butter, Olivia, as I’m sure that would work. But if you do decide to try Sunbutter, please let us know how it goes!

  • Carol Lorette
    May 30, 2018 at 1:40 PM

    Thank you Nicole, I have always loved the taste of these cookies but cannot have that much sugar. You have once again made my day very happy.

    • Nicole Hunn
      May 30, 2018 at 1:51 PM

      Aw, Carol, that’s so awesome. You just did the same for me. :)

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