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Reese’s Pieces Peanut Butter Oatmeal Cookies were made with the peanut butter lover in mind.  Heavily loaded with peanut flavour, this cookie is sure to please the peanut butter kid in all of us!

I had this wonderful idea to invite some friends over for cards, and, of course, my inner domestic diva took full control of my every fiber, and I started to fret over what I was going to serve for munchies.  John.e is constantly and forever reminding me that I get myself all worked up whenever we have company coming.  The amount of prep that I do, not only physically, but mentally as well, is overwhelming. 

We love having our friends over, and it’s evident that they appreciate the effort that I put into being a good host, but I can’t shake the need to impress whenever possible.  This particular evening, I decided to put together a little candy and popcorn bar.  When the evening was over, I packed them up a few boxes of my homemade moose munch, butter salt popcorn, and various candies.  However, just like every single time we host an evening in, we were left with so many leftovers.  The Reese’s Pieces were part of the candy bar, and there was an abundance leftover, hence, this cookie came to be.

I cannot count how many times I have heard the same lecture from John.e about my need to impress.  It’s a serious issue, and I have no idea where it stems from.  Whenever we have company coming, I go on a cleaning rampage and take everyone on that spiraling trip with me.  Even though we already keep a very clean home, in my mind it’s never clean enough the way it is.

So, for example, if we have company coming on a Saturday evening, the whole of Saturday is spent at home getting things prepared.  The bathroom must be re-cleaned from top to bottom.  The kitchen – like every square inch of it – must be scoured and cleaned.  Then, there’s the dusting, the vacuuming, the moping, and the polishing.  Windex and PineSol become my immediately friends.

Dusting is crucial.  My mom used to have a friend that once admitted to her that whenever she visited with her friends, she would purposed ask to use the washroom.  Once inside the washroom, she would rub her finger gently across the top of the washroom door’s facing.  If there was dust up there, she knew her friend didn’t keep a very clean house.  Ever since my mom told me that story, I have been very rigid when it comes to dusting more than just visible surfaces.  This woman has never been in our home, and probably never will be, but why take the chance?

I remember once my mom and dad were coming to visit on a Saturday morning.  They were coming to Toronto to spend the day with us.  Well, before I could scan our apartment to see if everything was up to my standards, they were knocking at the door.  Imagine my panic!?  You see, even when family comes to visit, the extreme need to have a spotless home is still present.

John.e ended up answering the door and before my parents could even say hi, he told them to not make mention of anything that was out of place or not clean enough.  You see, he knew that my mom was the same way.  She cleaned every single day without fail.  Like, every single day!

Once, when I was about ten years old or so – give or take a year – I was laying on the couch and reading a book in the living room of our family home.  My mom came into the room and asked me to go read in my bedroom, because – and I quote – “Reading makes the house look untidy.”  So, I wonder why I’m so strict with everything being in its place!?

Now that I’ve written all this, I hope none of our friends read it.   I don’t want them to think that their visit is not wanted or appreciated.  We love having company over, truly!

I have to stop talking about my faults and get back to this cookie recipe.  Like everyone, I suppose, I have a basic cookie recipe that I go for most of my cookie endeavours.  I usually just modify the taste and texture of the cookie by switching ingredients in and out whenever warranted.  This recipe is very similar to my chocolate chip cookie recipe, but I did make some minor adjustments.  I knew that adding the Reese’s Pieces was going to give my cookie a sweeter taste, but also, there would be extra peanut butter flavour.  I adjusted by reducing the amount of peanut butter I would normally use in a cookie recipe so that the peanut butter flavour would still be prevalent, but not so much that the cookie wouldn’t hold together during the baking process.    

This is a great cookie recipe to get your kids involved with – especially if your kid is free of peanut allergies.  If that’s the case, just switch out the peanut butter with a soy nut butter, or any nut butter, really.  You could also use Nutella, but that will change the colour of your cookie.  The Reese’s Pieces can be easily exchanged with milk chocolate M&Ms or in you’re in Canada, milk chocolate Smarties!

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3.58 from 7 votes

Reese's Pieces Peanut Butter Oatmeal Cookies

Reese’s Pieces Peanut Butter Oatmeal Cookies were made with the peanut butter lover in mind. Heavily loaded with peanut flavour, this cookie is sure to please the peanut butter kid in all of us!
Course Dessert
Cuisine American
Prep Time 15 minutes
Cook Time 13 minutes
Total Time 28 minutes
Servings 24 cookies
Calories 205kcal


  • 1/2 cup salted butter, softened
  • 1/2 cup granulated sugar
  • 1/2 cup brown sugar
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1/2 cup peanut butter
  • 1 cup all purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 cup quick cook oats
  • 2 cups Reese's Pieces


  • In a large mixing bowl, with a hand-held mixer, blend together the butter, granulated sugar, and brown sugar.
  • Once completely incorporated, add the egg, vanilla, and peanut butter. Mix well to combine.
  • Next, add the flour, salt, and baking soda. Mix well.
  • Stir in the oatmeal and the Reese's Pieces.
  • Roll the cookie dough into golf-sized balls and place them onto a lined baking sheet.  Position the dough evenly on your cookie sheet.  Be sure to leave room for growth.
  • Bake at 350 degrees for 13 minutes.
  • Allow the cookie to cool for two minutes on the baking sheet before transferring to a cooling rack for the remainder of the cooling process.


Calories: 205kcal | Carbohydrates: 24g | Protein: 4g | Fat: 10g | Saturated Fat: 5g | Cholesterol: 17mg | Sodium: 187mg | Potassium: 111mg | Fiber: 1g | Sugar: 17g | Vitamin A: 130IU | Calcium: 21mg | Iron: 0.6mg

Here’s proof that John.e enjoyed the cookie.  I made him an extra special monster-sized cookie!


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This Post Has 14 Comments

  1. OH YES!!!!! We can't often buy Reese's Pieces here. Some times I find them in the discount shop (I know right!!!!!) but never in the supermarket! It was a happy happy day when our local supermarket started selling peanut butter chips. Love these
  2. Byron - these look delicious!! I love peanut butter cookies and never thought of adding Reese's Pieces. So happy I found you through the Facebook forum. I really appreciate bloggers like you who take the time to help us all find easier ways to get our content out there to the masses :) Looking forward to seeing what recipes you create next!

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