Peanut Butter Cookie Bars

These Peanut Butter Cookie Bars are sweet, soft, chewy and mega peanut buttery!

I made the most delicious peanut butter cookie bar recipe today.  The most delicious I tell you.  I seriously cannot stop eating these little bars of peanut butter deliciousness.  Peanut butter is one of my biggest weaknesses, and combine it with a cookie batter, I can’t stop.  Won’t stop.

Peanut Butter Cookie Bars {A Pretty Life}

These cookie bars are sweet, soft, and mega peanut buttery.  I underbaked mine just a smidge, but I like cookies and bars soft and chewy, and underbaking them makes them just perfect.  You need to make them.  Stat.

Peanut Butter Cookie Bars {A Pretty Life}

And can we just talk about this pan for a second?  Isn’t it a thing of beauty?  I’ve really grown an appreciation for, and a big love of vintage baking tins and pans.  I love the shape of them, the details in the metal, and the worn look they wear.  I want to know their stories.  Who baked in them?  What was baked in them?  Where did they come from?  I just love the mystery of them, so I find myself scouring thrift shops and antique stores for vintage tins like this one in the picture.  So pretty.

Anyway, shall we get back to these Peanut Butter Cookie Bars?  Yes, I think we should.



Peanut Butter Cookie Bars

  • Author: Jo-Anna Rooney
  • Prep Time: 10
  • Cook Time: 35
  • Total Time: 45 minutes
  • Yield: 36 medium bars 1x


These Peanut Butter Cookie Bars cookie bars are sweet, soft, chewy and mega peanut buttery!



  • 1/2 cup butter (at room temperature)
  • 3/4 cup peanut butter
  • 1/2 cup sugar
  • 1/2 cup packed brown sugar
  • 1 egg
  • 1 tsp vanilla
  • 1 cup flour
  • 1/2 cup quick-cooking oats
  • 1 tsp baking soda
  • 1/4 tsp salt
  • 1/2 cup peanut butter chips


  1. Preheat your oven to 350 degrees.
  2. Line a 9×9 square baking pan with parchment paper.
  3. In a bowl, cream together the butter, peanut butter, and sugars until light and fluffy.
  4. Beat in the egg and vanilla.
  5. In a separate bowl, whisk together the flour, oats, baking soda and salt.
  6. Add the flour mixture to the butter mixture and combine.
  7. Stir in the peanut butter chips.
  8. Spread the mixture into the baking pan, making sure it is smooth and level.
  9. Bake for 30 – 35 minutes, or until the centre looks set. See notes.
  10. Cool on a wire rack before cutting.


I wanted our bars to be slightly chewy, so they are a little under done. I baked mine for 30 minutes.

Recipe slightly adapted from Taste of Home

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If you love peanut butter you might like these recipes too!

Anyway, I hope you enjoy this recipe…it’s definitely a keeper around here!

Have a delicious day!

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  • Reply Tara February 23, 2015 at 12:09 AM

    I was going to comment on that vintage pan! I love it! This recipe looks divine! I’m pinning it right this second!

  • Reply Sagus Yudistira February 23, 2015 at 10:06 PM

    An usefull post,thx to admin for the article

  • Reply Ping February 24, 2015 at 6:20 AM

    Husband is a happy camper as I’m making this right now! Anything peanut butter is a win win:) Thank you for sharing your treasures Jo-Anna!

  • Reply Ping February 24, 2015 at 9:20 AM

    Made it and it’s so yummy with milk despite that I over baked it a little. Sure making this again!

  • Reply Colleen Pastoor February 24, 2015 at 8:04 PM

    Oh my gosh, this looks to DIE FOR! My hubby is a PB addict so I’ll have to add it to my recipe box

  • Reply Emma February 25, 2015 at 8:04 PM

    Oh gosh, these look so delicious. I can’t wait to try this recipe!

  • Reply Cathy February 27, 2015 at 7:59 PM

    I love peanut butter, really love peanut butter! And these cookie bars look amazing! 🙂 Saying hello fro link party palooza!


    • Reply Jo-Anna@APrettyLife March 1, 2015 at 4:22 PM

      Hi Cathy! I love PB so much too! These bars are the perfect peanut butter fix! Thank you for stopping by!

  • Reply Kathryn February 28, 2015 at 11:18 AM

    mmm these look so delicious! I love peanut butter, thanks for sharing : )


  • Reply Kathryn May 4, 2015 at 1:23 PM

    Mmmmmm these look so yummy, the perfect little treat. I’d probably under bake mine as I love the chewy texture too. Thank you for sharing, I came across you on the motivate me monday link party : )

    Kathryn | Nimble Note

  • Reply Travel Animal Doctor May 5, 2015 at 5:40 PM

    These look delicious. I can’t wait to try it. I have always enjoyed cookie recipes with peanut butter.

  • Reply Ashleigh May 6, 2015 at 11:09 PM

    Oh my goodness, these look amazing! Thank you for sharing this recipe! Pinned! Please come share this and link up with me at because I know others wlll love it, too!
    Have a great weekend ahead!! xx Ashleigh @SimplyWright

  • Reply Stephanie Volkert May 6, 2015 at 11:09 PM

    I like my cookie bars to be chewy too, so thanks for saying to cook them for 30 minutes. A lot of cookies and other treats that have peanut butter tend to be hard, and I like softer treats.
    Visiting from All Things Thursday.

  • Reply Bonnie Lyn Smith May 7, 2015 at 7:50 AM

    Pinned! They look fabulous! Coming to you from “Espressos of Faith” via #Coffee&Conversation!

  • Reply penpen May 7, 2015 at 3:02 PM

    the bars sound great. Would it be a sin to sub chocolate chips for the peanut butter chips?

  • Reply Karly May 9, 2015 at 9:01 PM

    Wishing I had these right now! Thanks for linking up with What’s Cookin’ Wednesday!

  • Reply Becky May 10, 2015 at 4:21 PM

    I love PB! Thanks for sharing at Motivational Monday. Hope you will link up again tonight!

  • Reply Julie is Hostess At Heart May 10, 2015 at 10:22 PM

    Who can resist peanut butter? These look amazing!

  • Reply Theresa @DearCreatives May 11, 2015 at 11:06 PM

    Hi Jo-Anna hope your having a great week! Pinned & shared. Hope to see you again soon. Thanks for sharing at the Inspiration Spotlight party!

  • Reply Melissa French, The More With Less Mom May 12, 2015 at 6:12 PM

    I should make this for my son’s birthday, he loves peanut butter. Thanks for posting. Hello from Project Inspired.

  • Reply Takanashi Rikka September 8, 2015 at 8:09 AM

    Nice! i want some pretty 😀

  • Reply Suzu September 8, 2015 at 8:36 AM

    Look delicious! i want to buy some 😀

  • Reply snafu February 23, 2016 at 9:13 PM

    Look delicious!

  • Reply Jeannie September 6, 2017 at 2:48 PM

    Making these now I’m so excited to try them thank you !

  • Reply Danielle M. Wilson May 21, 2018 at 8:26 AM

    I made these and the taste is amazing, but they just fell apart on me. I’m not sure what I did wrong. 😩

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