Chewy Flourless Oatmeal Peanut Butter Cookie Recipe


Oatmeal Cookie Recipe Without Flour

Making this oatmeal cookie recipe without flour is quite easy, and you get to enjoy the most delicious flourless cookies with a tasty chewy texture.

This is one of my favorite cookie recipes, and I’m hoping you will enjoy it too! Not only is this recipe delicious to enjoy eating, but it is also a simple recipe to make.

flourless peanut butter oatmeal cookies

Flourless Peanut Butter Oatmeal Cookies

Making flourless cookies doesn’t have to be complicated. These cookies are some of my favorite cookies to make, and they are a great option when you are in the mood for a sweet treat. 

Another great thing about these oatmeal cookies made without flour is that they make delicious gluten-free oatmeal cookies. Since oats are naturally gluten-free, you will just want to make sure you check the processing of your oats, so that they are made in a facility without gluten, especially if you are looking for a flourless cookie recipe due to food allergy reasons. 

Why You’ll Love This Oatmeal Cookie Recipe Without Flour

These oatmeal cookies without flour are so delicious, you can’t go wrong with this delicious, sweet treat. This recipe that I am going to share with you, makes the most delicious flavored chewy cookies, that you are going to love. 

Plus, the process of making this cookie recipe isn’t very difficult. Allowing you to make the tasty treat in a short amount of time and enjoy the tasty results of your labor.

ingredients for oatmeal cookies without flour

Key Ingredients in Flourless Oatmeal Cookies:

Rolled Oats

Rolled oats are sometimes referred to as old fashioned oats. Basically, you want the kind that is not quick oats. Meaning that they are whole oats.

Baking Soda

Baking soda is what will help your cookies rise. This is a very important ingredient to include. 


I used basic iodized salt, but you may use sea salt as a great alternative if you wish. 


A little bit of cinnamon will help flavor your delicious cookies and give them a little more full-bodied flavor. 


I used regular salted butter, but you may choose to use unsalted. Just remember that it has less salt content, so you may need to add a pinch more to compensate. 


Eggs are another important ingredient, as they help to hold all of the ingredients together. You can check out these egg substitutes if you would rather use a different ingredient. 

Brown Sugar

My preference is to use packed light brown sugar for this cookie recipe. However, you may use dark brown sugar if you would rather, just know that it will make the cookies have more of a fudgy texture to them. 

Creamy Peanut Butter

Peanut butter is an essential ingredient in this flourless oatmeal cookie recipe. Because these specific cookies are made without flour, oats, and peanut butter are what make up the base of these cookies. You may substitute processed peanut butter for another type of natural peanut butter if you prefer.

Vanilla Extract

A little bit of vanilla is included in this recipe to give the oatmeal cookies without flour even more flavor. 

flourless oatmeal raisin cookies cooling

Choosing Your Peanut Butter

Choosing the right kind of peanut butter for this recipe is a critical step in the success of your cookies. Although the easiest type of peanut butter to use is your normal processed peanut butter, made from peanuts, you may choose to use another type of nut or seed butter if you prefer. When you use natural peanut butter in place of traditional peanut butter, it is simply a one-to-one substitute ratio for this recipe. 

Can I Make These Cookies With Almond Butter?

Yes, you may replace traditional peanut butter with almond butter if you would rather. Simply use the same amount of almond butter as you would peanut butter. 

What about other types of natural peanut butter?

There are many other types of natural peanut butter that you may also use in place of the traditional peanut butter. Some other great substitute options include sunflower butter, walnut butter, or any other type of natural peanut butter.

Natural Peanut Butter Oatmeal Cookie Recipe without Flour Tips

When you make these oatmeal cookies without flour, you will want to be aware of a few baking tips that will help your cookies turn out even better. Let’s look at some of the best tips.

Cold Natural Butter

If you are using natural peanut butter, it is best to let it warm up, before adding it to the cookie dough. 

To Press or Not To Press

When you are using natural peanut butter, you will want to press your oatmeal cookies without flour out on the baking pan before you bake them. 

On the other hand, those of you who stick with processed peanut butter, don’t have to press the cookies before baking them. They will likely flatten out naturally during the baking process. 

Stir Peanut Butter

No matter what kind of peanut butter you are using, you will want to make sure to stir the peanut butter thoroughly before adding it to your mixing bowl. This way the oils will be mixed back in the peanut butter like they should be before you add it to your baking mixture. 

pile of oatmeal cookies without flour

Quick Oats vs Rolled Oats

When selecting your oats to use in these delicious oatmeal cookies, you might be confused as to which ones to choose. There are so many options, from quick oats, instant oats, quick-cookie oats, rolled oats, or old-fashioned oats.

The best options for this recipe are going to be the type of oats that are labeled rolled oats, or old-fashioned oats, you will want to skip the quick versions for this recipe, and instead use oats that contain the whole oat. 

What if I’m Gluten-Free?

If you have gluten-free concerns, you will want to make sure to look for certified gluten-free oats. Although oats are naturally gluten-free, some may be processed in facilities that also deal with foods containing gluten. 

This will be of great concern to you if you have celiac disease, or if you are trying to adhere to a gluten-free diet for other reasons. 

How to Make Oatmeal Cookies without Flour

Step 1: Gather the Ingredients

Before you begin making my delicious oatmeal cookie recipe without flour, you will want to gather all of the ingredients, and make sure you have everything you need. 

Step 2: Mix Ingredients

In a large mixing bowl, add the dry ingredients, and mix for a few seconds until combined. Next, add the wet ingredients to the mixing bowl.

add the dry ingredients

The dry ingredients

mix the dry ingredients

Mix throughly

After all of the ingredients have been added, mix thoroughly until the cookie dough is combined. Feel free to add your favorite mix-ins such as chocolate chips, raisins, or anything else you love. 

add the wet ingredients

Add the wet ingredients

mixed cookie dough

Mix throughly

Step 3: Shape Cookies

Next, you will need to shape the cookie dough into small round balls. I like to use a small cookie scoop to speed up the process. If you don’t have one, roll the balls into equal-sized balls, approximately one inch in diameter. 

Add cookie dough to baking sheet

Step 4: Bake the Cookies

Prepare the cookie sheet, by lining it with parchment paper if you are able. If not, grease your cookie sheet with cooking spray. 

Preheat the oven to 375°F. 

Place the cookie dough balls onto the cookie sheet, leaving plenty of space in between the balls. 

Bake for approximately 8-10 minutes, if you like them a little gooey in the center. Or 10-12 minutes if you prefer them a little more done. I like to bake them until the cookies just begin to turn a golden brown around the edges.

Once the cookies are baked to your liking, remove them from the oven.

Baked oatmeal cookies without flour

Step 5: Cool Off

Set the hot cookie sheet on your stovetop, or a hot pad for a few minutes (about 2-4 minutes) so that the cookies can cool off enough for them to be moved. Place the warm cookies on a wire rack at room temperature and allow them a few minutes to finish cooling off. 

flourless cookies cooling on wire wrack

Step 6: Eat Them!

When they are cooled to your preference, it is now time to enjoy eating your tasty oatmeal cookies without flour! 

broken flourless oatmeal cookies

What Else Can I Add To Oatmeal Cookies?

If you are like me, I prefer to add some delicious mix-ins to my flourless oatmeal cookies. Let me share a few ways you can easily customize your peanut butter oatmeal cookies with these variations and substitutions. 

Flourless Peanut Butter Oatmeal Chocolate Chip Cookies

The most common type of flourless oatmeal cookie to make is a flourless oatmeal chocolate chip cookie. To make these flourless oatmeal chocolate chip cookies, you can easily follow the recipe above, then add your favorite type of chocolate chips into the cookie dough before baking it.

Just in case you want MORE ideas, here are some more of my favorite ideas for mix-ins to add to these flourless oatmeal cookies! 

Oatmeal Cookie Mix-Ins

  • Chocolate chips
  • White chocolate chips
  • Peanut butter chips
  • Raisins 
  • M&Ms (your favorite kind)
  • Almonds
  • Walnuts
  • Pecans
  • Dried cranberries

Storage & Freezing:


The best way to store your leftover oatmeal cookies made without flour is to allow them to cool to room temperature, then transfer the cookies to an airtight container. Let the cookies keep in the airtight container at room temperature for about 4 days. 

Tip: If you are in a humid location, you may want to store the cookies in an airtight container in the fridge, so that they don’t go bad right away from the humidity. 


If you happen to have leftovers that you are looking to keep for a longer amount of time, you can freeze the baked cookies or cookie dough balls. To do this you will want to transfer the cookies to a freezer-safe container, seal it, and then place it in the freezer for up to three months. 

oatmeal raisin cookies without flour

Frequently Asked Questions

Can I make them vegan?

Yes, you can make these cookies vegan, if you would like. You will need to select your favorite egg substitute and butter substitute, otherwise, these cookies may be baked according to the recipe instructions. 

Flourless Oatmeal Cookies

These tasty flourless peanut butter oatmeal cookies are an easy recipe to make, when you are looking for a delicious snack. I am so excited to share my favorite flourless oatmeal cookie recipe with you, in the hopes you will enjoy it too! 

Thank you for stopping in to check out my recipe! I hope you enjoy it! 

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Flourless Oatmeal Cookies Recipe

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chewy flourless oatmeal peanut butter cookie recipe
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Faith Has been cooking and baking for many years! she loves to share her recipes with the world, and hopes you will enjoy them too!

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