Homemade Oatmeal Cream Pies

Amazing rich and fun homemade oatmeal cream pies made from a homemade cookies and a marshmallow fluff filling.

Move over Little Debbie, your snacks have nothin’ on me!
I was going to wait until Monday to share this recipe, but I just can’t wait. Happy weekend friends.
These were stunning. I am in love and want to make these every day of the week. Every. Day. I wasn’t sure how the filling would change the cookie as it sat overnight, so I did some playing. I baked my cookies so there were some still really soft and a little underdone, some done, and some a smidge overdone. As the cookie sits, the icing starts to soften the cookie. They were even better the second day than the night that I made them! That being said, the softest cookies were great but the cookies that were done with a hint of crunch were the best. The overdone ones were significantly resurrected from sitting overnight with the filling but were still a little crunchier than I would prefer.
Homemade Oatmeal Cream Pies
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Homemade Oatmeal Cream Pies

  • Author: Melissa Griffiths - Bless this Mess
  • Prep Time: 15 min
  • Cook Time: 10 min
  • Total Time: 40 min


Amazing rich and fun homemade oatmeal cream pies made from a homemade cookies and a marshmallow fluff filling.



For the Cookies:

  • 3/4 cup butter (1 1/2 sticks), at room temperature
  • 1 1/2 cups brown sugar
  • 1 large egg
  • 2 tsp. vanilla
  • 1 1/2 cups flour
  • 1/2 tsp. baking soda
  • 1/2 tsp. baking powder
  • scant 1/2 tsp. salt
  • 2 1/4 cup old-fashioned oats

For the Filling:

  • 1/2 cup butter, at room tempurature
  • 1 tsp. vanilla
  • 2 cups powdered sugar
  • 6 ounces Marshmallow Cream


  1. Preheat the oven to 325 degrees and line your baking sheets with parchment paper.
  2. Add the butter and the brown sugar to the bowl of your stand mixer and beat on medium speed until the mixture is light and fluffy, around 2 minutes.
  3. Add the egg and vanilla and beat for another minute. Add the flour, sprinkle on the baking soda, baking powder, and salt. Mix until combined. Add the oats and combine. The mixture will be a little tacky, but you should be able to roll it into a ball in your hands without making a total mess. If it is too sticky, add 1 tablespoon of flour at a time until the mixture can be handled.
  4. Roll the dough into 1 to 1.5 inch balls, using your hands and place the balls on the prepared cookie sheet 2 inches apart. Bake for 10 to 14 minutes until the edges begin to brown and the centers are set. Transfer to a wire rack and let them cool completely.
  5. For the filling, beat the butter and vanilla together until light and fluffy, about 2 minutes. Add the powdered sugar and beat for another 2 minutes. Gently fold in the marshmallow cream.
  6. When the cookies are cooled, match them with a mate according to size. Take one cookie and place a few tablespoons of the filling in the center on the flat bottom of the cookie. Take the mate and place it on top (flat sides together) and press it until the filling comes to the edge of the cookies.
  7. Enjoy with lots of milk; they are rich!

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Homemade Oatmeal Cream Pies

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How do you store these cookies, I just made them.


I must have made mine to big? They were not even close to brown after 14 minutes. Any ideas?

Anita Kantola
Anita Kantola

Wow, these are fantastic! This is my new favorite comfort food…thanks for sharing!

Crystal Hedrick
Crystal Hedrick

Made these this weekend. They were/are fantastic. Sharing them at work this morning and I’ve VERY popular. Next time, I’m going to make them a tad smaller, maybe bite-size…they are very sweet 🙂


Do you use the quick oats?


This recipe reminds me of childhood trips to my grandma’s kitchen…Really comforting!


Yum! I need to make these… they look amazing!

Simply Tia
Simply Tia

I am ALL over these cookies! Yum!


You have been so productive since I last checked in! Wonderful! So many recipes to try (pink lemonade cupcakes! Straw toppers! (personal favorites!), events, yummy cookies… and now I see a tip about sterling silver in the corner (I will look at this as well) I love the chick/chicken/spider stories — it most definitely sounds like you have an additional reason to have chickens. I look forward to seeing egg photos, down the road. Thank you for sharing the inspiration! I’ve seen marshmallow in Sweden recently & am really going to try this recipe!

Bless This Mess - About Me

I’m Melissa, and I want to help you feed your family wholesome food.

As a hobby farmer and mom of five, I’m all about keeping it simple in the kitchen. I want healthy meals that feed my family well, and then I want to get back to my (messy) life. Let’s work together to find something yummy for your dinner table.