Peanut Butter Cookies

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By Emmy Minucci

Published: May 11, 2026

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If you’re on a ketogenic diet and crave a sweet, satisfying treat, look no further. Our Keto Peanut Butter Cookies are the perfect solution. These easy, low-carb peanut butter bites deliver classic flavor without the guilt, using simple, wholesome ingredients.

They are soft, chewy, and come together in just 20 minutes, making them an ideal snack or dessert for anyone following a keto, low-carb, or gluten-free lifestyle. This recipe proves you don’t need traditional flour or sugar to create a delicious cookie.

Why You’ll Love This Keto Cookie Recipe

Finding delicious keto-friendly desserts can be a challenge, but this recipe changes the game. These cookies are naturally gluten-free and grain-free, relying on almond flour for structure. They are sweetened with a keto-friendly sweetener, keeping net carbs extremely low. The primary flavor comes from rich, creamy peanut butter, providing healthy fats and protein.

The texture is perfectly balancedโ€”soft in the center with a slight crispness on the edges after cooling. Best of all, the entire process from bowl to plate takes only 20 minutes, requiring minimal effort for maximum reward.

Key Benefits of These Cookies

These cookies offer more than just great taste. They align perfectly with a ketogenic diet’s macronutrient goals, being high in healthy fats, moderate in protein, and low in carbohydrates. Almond flour provides vitamin E and magnesium, while peanut butter offers a good source of niacin and manganese.

Using a sugar substitute like erythritol means you can enjoy sweetness without a spike in blood sugar, making these cookies suitable for many dietary needs beyond keto, including diabetic-friendly options.

Ingredients and Substitutions

This recipe uses a short list of simple ingredients. Here’s what you need and possible substitutions to tailor the cookies to your pantry.

Core Ingredients

  • Peanut Butter (1/2 cup): Use a natural, sugar-free peanut butter with no added oils for the best results. The oil separation is normal. You can substitute with any other sugar-free nut or seed butter like almond butter or sunflower seed butter.
  • Almond Flour (2/3 cup): Finely ground almond flour is essential. It cannot be substituted with coconut flour, as the absorbency is drastically different. For a nut-free version, sunflower seed flour may work with recipe adjustments.
  • Powdered Sweetener (3 tbsp): Powdered erythritol or a monk fruit-erythritol blend works perfectly to keep it keto. You can use powdered allulose for a softer result, or regular powdered sugar if you’re not strictly low-carb.
  • Milk of Choice (1 tbsp): Any unsweetened milk worksโ€”almond milk, coconut milk, or even water. This helps bind the dough.
  • Baking Soda (1/8 tsp): This helps the cookies spread slightly and achieve the perfect texture.
  • Salt (1/8 tsp): Enhances all the flavors. Use a fine sea salt.

Critical Ingredient Note

Always check your ingredient labels. Ensure your peanut butter and almond flour are pure without any non-keto additives. For optimal texture, make sure your sweetener is in powdered form to avoid graininess in the final cookie.

Step-by-Step Instructions

Follow these simple steps for perfect keto peanut butter cookies every time.

1. Prep and Make the Dough

Start by preheating your oven to 325ยฐF (163ยฐC). Line a baking sheet with parchment paper. If your peanut butter is not easily stir-able, gently heat it in the microwave for 10-15 seconds until runny. Be careful not to overheat it.

In a medium mixing bowl, combine the almond flour, powdered sweetener, salt, and baking soda. Stir these dry ingredients very well until fully combined and no lumps remain.

2. Combine and Shape the Cookies

Add the runny peanut butter and your choice of milk to the dry ingredients. Stir until a uniform dough forms. It should be slightly sticky but hold together. Roll the dough into 8 equal-sized balls. Place them on the prepared baking sheet, then use a fork or the bottom of a glass to flatten each ball into a thick cookie shape.

Pressing with a fork to create a classic criss-cross pattern is optional but recommended.

3. Baking and Cooling Tips

Place the baking sheet on the center rack of the preheated oven. Bake for 10 minutes. The cookies will look soft and undercooked when you take them outโ€”this is crucial! They will continue to firm up as they cool on the baking sheet.

Do not overbake, as this will make them dry. Let the cookies cool completely on the sheet before handling or serving. They will transform from soft to perfectly chewy as they cool.

Nutritional Information

Understanding the macros is key for keto success. Here is the detailed nutritional breakdown per cookie from this recipe.

NutrientAmount Per Serving
Calories64 kcal
Total Fat5.5g
Saturated Fat0.8g
Unsaturated Fat4.2g
Trans Fat0g
Cholesterol0mg
Sodium65mg
Total Carbohydrates2.5g
Dietary Fiber1.2g
Sugars0.4g
Protein2.8g
Net Carbs1.3g

Note: Nutritional values are estimates and may vary based on specific brands of ingredients used, particularly the peanut butter and sweetener.

Storage and Meal Prep Tips

These cookies store wonderfully. Once completely cooled, store them in an airtight container at room temperature for up to 5 days. For longer storage, you can freeze the baked cookies for up to 3 months. Simply place them in a single layer on a tray to freeze solid, then transfer to a freezer bag.

Thaw at room temperature when ready to eat. You can also freeze the cookie dough balls before baking. When a craving hits, bake from frozen, adding a minute or two to the baking time.

Common FAQs and Troubleshooting

Why are my cookies crumbly?

Crumbly cookies often result from dough that is too dry. This can happen if your almond flour is very absorbent or if you packed it into the measuring cup. For best results, spoon the flour into the cup and level it off. You can also add an extra teaspoon of milk to the dough to bring it together.

Can I double this recipe?

Absolutely! This recipe scales perfectly. Simply double all ingredients. You may need to bake in batches or use two baking sheets, rotating them halfway through baking for even results.

Can I use a different sweetener?

Yes, but the form matters. Liquid sweeteners like stevia drops will change the dough consistency, requiring less milk. Granular sweeteners may not dissolve, creating a gritty texture. Powdered sweeteners are highly recommended for a smooth result.

Are these cookies vegan?

With the specified ingredients, they are! Using a plant-based milk (like almond or coconut) ensures this recipe is both keto and vegan-friendly.

Final Thoughts

These Keto Peanut Butter Cookies are a testament to simple, clean eating. They satisfy your sweet tooth while keeping you firmly on track with your health goals. With their quick preparation, fantastic texture, and classic flavor, they are sure to become a staple in your keto recipe collection.

Whether you’re new to low-carb baking or a seasoned pro, this recipe delivers reliable, delicious results every time. Enjoy your homemade low-carb peanut butter bites with a cup of tea or coffee for the ultimate guilt-free treat.


The Recipe

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Peanut Butter Cookies

Peanut Butter Cookies


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  • Author: Emmy Minucci
  • Total Time: 20 min
  • Yield: 8 servings 1x
  • Diet: Gluten Free, Keto, Low-Carb, Vegetarian

Description

Soft, chewy keto peanut butter cookies made with almond flour and sugar-free sweetener. Ready in 20 minutes!


Ingredients

Scale

1/2 cup peanut butter, or nut butter of choice
1 tbsp milk of choice
2/3 cup finely ground almond flour
3 tbsp powdered erythritol or powdered sugar
1/8 tsp salt
1/8 tsp baking soda


Instructions

  1. Preheat oven to 325ยฐF (163ยฐC). Line a baking sheet.
  2. If nut butter is stiff, gently heat until runny.
  3. In a bowl, stir almond flour, sweetener, salt, and baking soda very well.
  4. Stir in the runny nut butter and milk to form a dough.
  5. Roll dough into 8 balls, place on sheet, and flatten into thick cookies.
  6. Bake on center rack for 10 minutes. They will look undercooked.
  7. Let cool completely on the baking sheet before serving.

Notes

  • Cookies firm up as they cool. Do not overbake.
  • Store in an airtight container for up to 5 days.
  • For a classic look, press with a fork to create a criss-cross pattern before baking.
  • Prep Time: 10 min
  • Cook Time: 10 min
  • Category: Dessert
  • Method: Baked
  • Cuisine: American

Nutrition

  • Serving Size: 1 cookie
  • Calories: 64 kcal
  • Sugar: 0.4g
  • Sodium: 65mg
  • Fat: 5.5g
  • Saturated Fat: 0.8g
  • Unsaturated Fat: 4.2g
  • Trans Fat: 0g
  • Carbohydrates: 2.5g
  • Fiber: 1.2g
  • Protein: 2.8g
  • Cholesterol: 0mg

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