These Crumbl peanut butter bar cookies are a tribute to the no-bake peanut butter bar recipes out there. They are made with a thick peanut butter oat cookie that is then topped with a smooth and creamy homemade chocolate frosting. This recipe gives you the best of both worlds and allows you to have a cookie that tastes just like a peanut butter cup!
If you love peanut butter, you need to try the Crumbl peanut butter Reese’s pieces cookies, Crumbl Reese’s peanut butter cup cookies, Crumbl peanut butter muddy buddy cookies and even Crumbl Monster cookie recipe – M&M’s, Peanut butter chips, Chocolate Chips.
If you know me you know that I have a soft spot for anything peanut butter. I mean I can literally service off of a jar of smooth peanut butter without any issues whatsoever.
So recreating the Crumbl peanut butter bar cookies was a cup of tea for me. I made sure to keep the cookies thick and soft just like the ones you would get from Crumbl then topped it with the smoothest most luscious cream cheese chocolate frosting on top.
This is the best Crumbl peanut butter bar cookie recipe!
These cookies are honestly great for any time of the year but would be even better during the holidays. I can totally see myself making minis of this recipe around Christmas and thanksgiving as well.
The cool thing about these cookies and the thing that I think personally takes them to the next level is the use of that chocolate fudge frosting. I mean, can you name a better combo than chocolate and peanut butter?! I think not!
Why you need to make this recipe!
- They are so easy to make at home.
- This recipe uses simple ingredients you probably already have in your pantry.
- These cookies are soft and chewy.
- You will be able to recreate your favorite Crumbl cookie recipe at home with this recipe. No more having to wait months for your favorite treat to comeback in store.
- These are the best frosted peanut butter cookies you’ll ever have!
Ingredients for this Crumbl peanut butter cup cookie recipe
Here are the ingredients you will need to make these cookies at home. Make sure to scroll down to the recipe card for the full detailed ingredient measurements.
- Peanut butter– Use smooth peanut butter. This recipe doesn’t use natural peanut butter so make sure to use something like Skippy of Jiffy.
- Butter– You will need softened butter for both the peanut butter cookie and the peanut butter buttercream.
- Brown sugar & granulated sugar– The combination of both sugars will give a depth of flavor to the peanut butter cookies and keep them soft as well.
- Egg– The egg is the binding agent of this cookie.
- Vanilla– The vanilla is also used to give more depth of flavor to the cookies.
- Flour– You can use AP flour for these cookies.
- Oats– This peanut butter cookie has a little oat mixed in there.
- Baking powder & baking soda– The baking powder & baking soda are used to give the cookies some height.
- Corn starch– The corn starch will keep your cookies soft and melt in your mouth.
- Salt– The salt will help balance out the sweetness of the cookies.
- Oil– The oil is used to thin out the Reese’s peanut butter chips a little.
- Cream cheese– The chocolatey fudge frosting uses just the right amount of crema cheese.
- Powdered sugar– The powdered sugar is used to sweeten out chocolate frosting.
- Cocoa powder– To get that perfect chocolatiness, we are gonna use good quality chocolate.
How to make Crumbl peanut butter bar cookies
This is how you can make Crumbl PB bar cookies. Make sure to scroll down to the recipe card for the full detailed instructions!
- Cream the butter, peanut butter, brown sugar, and granulated sugar.
- Add in the egg and vanilla extract and mix until smooth.
- Add in the flour, oats, baking powder, baking soda, corn starch, and salt, and mix just until the flour mixture disappears.
- Using a large cookie scooper, scoop out 8 equally sized cookie dough balls, roll them in between the palm of your hand, then gently flatten them to about 1 of an inch then freeze the cookie dough discs for 15 minutes.
- Bake the cookies in the preheated oven, let them cool down fully , then top with the homemade chocolate fudge frosting.
Frequently asked questions – FAQ
How to store these Crumbl peanut butter bar cookies?
Since this is a cookie recipe that is served chilled, you can store them in an airtight container in the fridge for up to 5 days.
Can I freeze these cookies?
Yes 🙂 I would recommend flash-freezing these cookies on a flat baking sheet until fully solid. Transfer the cookies to an airtight container making sure to separate the cookies with wax or parchment paper and freeze for up to 2 months.
Do I have to make the chocolate frosting from scratch?
I highly recommend making the cream cheese chocolate fudge frosting from scratch because homemade is always best.
But if you would rather use store-bought, I love the Simple Mills frosting. It states the best out of all the store-bought ones I purchased.
How to make catering sized Crumbl peanut butter bar cookies
To make these PB oat cookies smaller, you can make 18 instead of 9. Now instead of baking them for 13 minutes, bake them for 10 minutes instead. Frost them as you would the larger cookies and enjoy!
Crumbl peanut butter bar cookies
If you made these Crumbl peanut butter bar cookies and enjoyed them, don’t forget to leave a 5-star review by clicking on the 5 stars under the title and description. It would help me a ton
Crumbl peanut butter bar cookies
Ingredients
Peanut butter cookie base
- ½ cup smooth peanut butter
- ½ cup butter softened
- ½ cup brown sugar
- ⅓ cup granulated sugar
- 1 egg at room temperature
- ½ teaspoon vanilla extract
- 2 tablespoon + 1 cup all-purpose flour
- ½ cup Old fashioned oats
- ½ teaspoon baking powder
- ½ teaspoon baking soda
- 1 tablespoon corn starch
- ¼ teaspoon salt
Chocolate frosting
- 4 oz Cream cheese softened
- 2 tablespoon Butter softened
- ¾ cup Powdered sugar
- 3 tablespoon Cocoa powder
- ½ teaspoon Vanilla extract
- 2-3 tablespoon milk to make the frosting more creamy
Instructions
- Preheat the oven to 350F then line a baking sheet with parchement paper and set aside.
- Cream the butter, peanut butter, brown sugar, and granulated sugar. Add in the eggs and vanilla extract then mix until combined.
- Add in the flour, oats, baking powder, baking soda, corn starch, and salt, and mix just until the flour mixture disappears.
- Using a large cookie scooper, scoop out 9 equally sized cookie dough balls, roll them in between the palm of your hand, then gently flatten them to about 1 inch in thickness and bake in the preheated oven for 12-13 minutes.
- Let the cookies cool down on the baking sheet for 15 minutes before transferring to a cooling rack.
Make the cream cheese frosting
- Cream the butter, cream cheese, and vanilla extract together until smooth. Mix in the powdered sugar until combined.
- Sift in the cocoa powder, then add in 2 tablespoon milk and mix again until fluffy. If the frosting seems too thick, add in one more tablespoon of milk.
- Frost each cooled down cookie with a thick dollop of frosting, chill for 30 minutes or more, then enjoy!
Notes
How to store these Crumbl peanut butter bar cookies?
Since this is a cookie recipe that is served chilled, you can store them in an airtight container in the fridge for up to 5 days.Nutrition
Thank you for making it all the way down here 🙂
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Anna
This looks amazing! Does this frosting harden when dry? How long does it take to dry?
Chahinez
This icing will stay soft with a slight crust when left at room temperature. It will not fully dry.
Cherie
These cookies are great. Love the texture and the frosting is perfect!
Chahinez
I’m so glad that you liked them!!
Alexis
These were a hit! I love a copycat recipe and these sure delivered. The peanut butter cookie texture was perfect and the chocolate + cream cheese frosting was delish!
Kristina
GOLD!!! Perfectly soft peanut butter cookie with the absolute best chocolate frosting. I whipped my frosting for awhile and kept it on the thicker side and it was like pudding, so dang good. It was a magical combo I’ll be making again and again.
Allison
This recipe is INCREDIBLE! After finding it a couple weeks ago I have probably made it at least once a week since! All of my friends and family also love these cookies and that chocolate cream cheese frosting is the best frosting I have ever had! This is my new staple cookie recipe.
Chahinez
YAY!! These are my favorite cookies ever so I’m happy you’re enjoying them 🙂
Lauren
Love these cookies! I’m not a fan of peanut butter cookies because I think they are too dry to eat, but these are still so soft and the oats are such a good addition. I will say I used Costco organic peanut butter and it was way drier than it should have been, so I added an extra egg yolk for adhesion! Thanks for the recipe, Chahinez! You hit it out of the park!
Chahinez
These will change any nonpeanut butter lover to a huge PB fan! Glad you loved them!
Angela
These were amazing!! My family said they were their new favorite peanut butter cookie!! Another awesome recipe!!
Kay Rodriquez
Very easy recipe to follow my husband loved these cookies especially the added addition of the oatmeal with the peanut butter.
Chahinez
I am so glad that you and your husband loved these friend 🙂
Chahinez
Adabel
My house smells amazing! Easy to follow recipe. C
Abby
Even better than the original