Reese’s Peanut Butter Oatmeal Cookie Bars

Reese’s Peanut Butter Oatmeal Cookie Bars are perfect for the peanut butter lover in your life!  Serve with an ice cold glass of milk for extreme satisfaction!

Reese’s Peanut Butter Oatmeal Cookie Bars are perfect dessert recipe for the peanut butter lover in your life! Serve with an ice cold glass of milk for extreme satisfaction! |

Reese’s: My favorite candy.

Peanut Butter: Makes everything better.

Oatmeal:  Now it’s healthy!

Cookie Bars: Easy to eat, easy to make.

Do you see where this is going?  I’ve been on a bar kick lately that started with my Raspberry Coconut Magic Bars and then more recently the Coconut Toffee Chocolate Chip Cookie Bars.  I thought I’d mix it up a little today and bring my favorite candy EVER to the table – Reese’s Peanut Butter Cups.  I pulled out all the stops today with Reese’s miniatures AND minis and also used Reese’s peanut butter baking chips in the dough.


Oh.  And don’t think that these are “peanut butter” bars exclusively due to the Reese’s.  No.  There is peanut butter in this recipe as well.    Not only are these bars delicious but they are really filling as well.  The center is perfectly soft and chewy and of course the sweet Reese’s surprise makes it even more drool-worthy.  Now I’m wondering why I sent that big plate of them to work with Chris…

This is one of those desserts that you can whip together in no time and that will have everyone asking for the recipe.  Trust me.  To make sure the Reese’s are nicely distributed I put down a layer of dough first and then sprinkle the yumminess on top.  Next some dollops of the remaining dough top it off making a peanut butter oatmeal cookie sandwich with a Reese’s filling.  Not a bad way to go I’m thinking.


They bake up so beautifully and I love seeing the Reese’s peeking out from the bars!  I cut these into 16 bars for the pictures but you’ll want to cut these in half for a party.  If you’re by yourself and no one is there to judge…eat a whole bar.  You deserve it.  I know I did!

Reese's Peanut Butter Oatmeal Cookie Bars |

Reese’s Peanut Butter Oatmeal Cookie Bars
Serves: 32 pieces
  • 1½ sticks unsalted butter
  • 2 c light brown sugar
  • ½ c creamy peanut butter
  • 2 eggs, room temperature
  • 1 Tbls vanilla
  • 2 c flour
  • 1 c old fashioned oats
  • 2½ tsp baking powder
  • ¼ tsp salt
  • 1 c Reese's peanut butter baking chips
  • 2 cups Reese's minatures, chopped or Reese's minis
  1. Preheat oven to 350 degrees.
  2. Line a 9x13 inch baking dish with parchment paper.
  3. Cream butter and sugar together in a large mixing bowl. Add peanut butter and continue mixing.
  4. Add eggs one at a time, mixing well after each egg. Add in vanilla.
  5. Combine flour, oats, baking powder, and salt in a small mixing bowl.
  6. Add the flour mixture slowly stirring until well combined.
  7. Stir in the peanut butter chips.
  8. Spread ⅔ of the dough on the bottom of the pan. Top with Reese's minis or chopped miniatures.
  9. Drop the remaining dough on top by the teaspoon. It doesn't have to be perfect and it won't cover all the Reese's.
  10. Bake for about 30 minutes. Let cool completely and then cut into bars.

Reese’s Peanut Butter Oatmeal Cookie Bars are perfect dessert recipe for the peanut butter lover in your life! Serve with an ice cold glass of milk for extreme satisfaction! |

Reese’s treats from friends:

Reese’s Fudge from Crazy for Crust

Chocolate Peanut Butter Cup Popcorn from The Gunny Sack

Reese’s Rocky Road Brownies from Inside BruCrew Life

More Reese’s love:


Reese’s Peanut Butter Cup Mini Cheesecakes

Reese's Banana Bread

Reese’s Banana Bread

Reese's Freezer Oatmeal Cookies

Reese’s Freezer-Friendly Oatmeal Cookies


Reese’s Chocolate Dipped Waffle Ice Cream Sandwich

Mom On Timeout Signature

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  1. I love how you think–the Reese’s overload happening on this webpage has just kicked my sweet tooth cravings into full gear. Good thing I have students to feed! Thanks for sharing!

  2. I made peanut butter cup cookie bars about 2 weeks ago with dough crumbled on top, too! They’re a new fave of mine. Love them and know I would love yours. I also love oats in bars for the extra texture & bet these are great!

  3. You are speaking to the Reese’s lover in me with these bars. I love all the peanut butter you have going on in there!!! I’ll take 3 of those big bars please :-)

  4. My mouth is watering!!!! I need these in my life Trish. :)

  5. These sound amazing! We love, love, love cookie bars and can only imagine how good these must be with Reese’s!

  6. Love, love, LOVING this recipe my friend! Oats + peanut butter = can’t go wrong. I love making layered bars like this.

  7. Oh my, peanut butter overload!!! And that is a good thing!!! One can NEVER have to much peanut butter! Great recipe Trish!

  8. I bet these are so good filled with peanut butter throughout! Plus, you feel like you have a healthy treat with the oatmeal addition.

  9. Love how you threw in the healthiness of the oatmeal…lol! It sounds like my kind of cookie bar with all of this yumminess! (=

  10. Yum!! Your bars look and sound so delicious!

  11. These are amazing Trish! Definitely comfort food for sure! Can’t wait to try these babies :)

  12. These look incredible, Trish! I love cookie bars, so easy to take places :)

  13. YUM! So many good recipes. I’m not sure which one to try first. Thanks so much for sharing. Enjoy your day!

  14. Pinned those peanut butter oatmeal cookie bars!!

  15. :::drooling::: I would eat these so fast!

  16. Guess who found a bag of Reese’s in the freezer?! Yep and I know just what to make with them!!!

  17. Oh my gosh! These look amazing! I am so glad I follow your blog!

    I would love for you to link up to my TGIF Link Party! Who knows, you just might be featured next week!


  18. Yummy! These look fabulous!

  19. Yum, yum. Pinned!

  20. Oh yeah! I am wanting some of those!!

  21. Heehee, love that oatmeal justification going on up there. These look fabulous, Trish. Yum-O.

  22. Wow, this looks so good! I will totally add oatmeal to baked goods just so I can call it healthy! Great call!

  23. These cookie bars sound soooo good!!
    Thank you for partying with me, featuring you tonight!

  24. Holy moly!! Those are so over the top!

  25. This is an amazing combo Trish! Love it!

  26. I could go for one of these right now!!
    Deborah recently posted..Blogger Spotlight – Life As a Lofthouse

  27. Oh my holy deliciousness!!! Pinned it!!
    carrian recently posted..JCW’s French Fries & Special Sauce

  28. Oh my, these sound amazing! Trish you’re a Reese’s expert! :)

  29. I made these earlier this week – used crunchy pb and chocolate chips instead of pb chips as a slight modification. So good!

    Thanks for sharing :)
    Jenni @ Traveler in the Kitchen recently posted..Biscotti Again (it’s becoming a habit)

  30. I just stopped by to spread some peanut love. I was looking for a peanut butter recipe, but ended up making peanut cookies so I decided to visit all peanut posts at the parties.
    Madonna/aka/Ms. Lemon recently posted..Peanut Cookies

  31. Wow! These bars look fantastic…not to mention all of your other chocolate/peanut butter treats! Thanks for posting…we’ll be trying this soon:)
    Julie recently posted..Hearty Whole Grain Waffles

  32. Love these! Totally Pinned!
    [email protected] Plaid and Paisley Kitchen recently posted..Cherry Coke Cake

  33. Oh mylanta….I’m drooling over here!! These are a must make in the near near future. Thanks for sharing!
    kelly arent {copper roof interiors llc} recently posted..Union Jack-Repurposed table

  34. I cooked these for Christmas any mine were dry. What could I do different? Add more butter?

  35. looks great! Could I omit the peanut butter chips in the dough without affecting the chemistry? Seems like I could. . .
    Margo, Thrift at Home recently posted..Burpcloths for Babies

  36. I made these for a Super Bowl party and they were a HUGE hit! One of the tastiest desserts I have ever made! Thanks for the recipe!

  37. Oh my goodness those look incredible! Reese’s for the win!

  38. Stacy Myers says:

    These are so yummy! I used white wheat flour and sucanat instead of brown sugar. I didn’t have the Reese chips, so I used chocolate chips and chocolate chunks. The entire family raved over these….and they are fantastic warm, with a little bit of vanilla ice cream. :-)

  39. When I look for recipes on line, I always read the reviews. It is so annoying to read so many comments that say how good the picture looks. Of course they look great! I can see that. Lets give comments after you make them. Valid comments that can help others decide if they are worth making. Obviously you have lots of time on your hands!

  40. I used Nestle chocolate and peanut butter chips and a mix of mini peanut cups and leftover Reese’s peanut butter eggs because that’s what I had hanging around my pantry! Soooo excited about these!
    Divorced Kat recently posted..Want to Know Why You Have to Log In With Facebook?

  41. The only change I would make would be to use dark chocolate reese’s

  42. Your style is unique in comparison to other folks I’ve read
    stuff from. I appreciate you for posting when you have the opportunity, Guess I’ll just book
    mark this blog.
    here recently

  43. Made these and they were amazing! Thanks for sharing!

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