The softest, most tender peanut butter cookies, sandwiched together with rich peanut butter frosting! These Peanut Butter Oatmeal Sandwich Cookies are a homemade version of the Girl Scout cookies called Do-si-dos. 

peanut butter sandwich cookies

This post is sponsored by the National Peanut Butter Board. I received compensation, but all opinions and content are my own of course!

I did it again you guys. I showed up to my son’s kindergarten pick up when I had arranged earlier in the week for a friend to pick him up that day. Why can’t I remember anything?? This has probably happened 4 or 5 times this year. At least this time I met my friend there, instead of what usually happens, which is that she picks up Truman on time and is already gone by the time I show up to get him a couple minutes late. Doh!

peanut butter sandwich girl scout cookies

There is a torrential downpour going on right now. In California! In May! It’s so weird. Although I suppose I shouldn’t be surprised. Eleven years ago when Eric and I got married on May 24th, it rained on our outdoor wedding reception. I remember I kept repeating to myself, “April showers bring MAY FLOWERS, come on California!!”

oatmeal sandwich cookies

We had to move the entire reception from my aunt’s beautiful backyard into the house, which we had most definitely not planned for. It was a bit of a disaster as far as parties go. My mom will still randomly mention mishaps that occurred that night that they didn’t tell me about to keep me from stressing out. Like the autographed baseballs that were on display in the house that some kid threw into the pool. Or the fact that the carpet in the house was such a wreck after 150 wet guests tramped over them that it had to be replaced.

peanut butter sandwich cookies

I look back on it now and laugh. Guess what? Eric and I are still married! Receptions are just parties anyway, right? Our real wedding took place that morning in the temple. Despite all the mishaps, I still remember it as one of the most perfect days of my life. Being married is great you guys. Happy 11 years to us!

peanut butter sandwich cookies

Babies. Just look at us!

To celebrate, I made Eric some peanut butter sandwich cookies. What says I love you more than peanut butter? Basically nothing.

oatmeal sandwich cookies

Peanut butter ftw!

These cookies are perfect because there’s peanut butter packed in the cookies AND the filling. I can’t be the only one who snacks on spoonfuls of peanut butter every now and then, right? It’s so delicious. My kids eat it every day on sandwiches, the only argument being about jelly and honey. The peanut butter is never questioned. I’ve included some recipes below using peanut butter that you won’t want to miss! You can also head here for even more peanut butter recipes.

How to make Peanut Butter Sandwich Cookies

These peanut butter sandwich cookies could not be easier! It’s a really simple dough.

peanut butter sandwich girl scout cookies

 I could probably eat this whole giant spoonful in one blissful afternoon.

oatmeal sandwich cookies

But if you can resist, refrigerate the dough for a while, then scoop into balls using a cookie scoop, and bake for about 8-10 minutes. The resulting cookies are soft, tender, and the perfect level of puffy in the middle: enough to be thick and soft, but not so much that it’s annoying to bite into a sandwich when they’re doubled up.

peanut butter sandwich cookies

peanut butter sandwich girl scout cookies

Once the cookies have cooled, whip up a simple peanut butter frosting and spread it on the bottom of a cookie. Sandwich them together and voila! The best peanut butter sandwich cookies ever.

peanut butter sandwich cookies

These cookies are copycats of the famous peanut butter sandwich Girl Scout cookies, have you ever had them? In some regions they’re called Do-si-dos. (I had no idea until recently that Girl Scout cookies have different names according to region. Crazy right?) They are so good, but not as good as these ones just out of the oven. I mean you just can’t beat that freshly baked flavor!

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More peanut butter recipes you won’t want to miss!

Peanut Butter S’mores Bars

Soft Chocolate Cookies with Peanut Butter Frosting

No Bake Frozen Peanut Butter Pie with Hot Fudge

Peanut Butter Cookies

No Bake Peanut Butter Oatmeal Energy Bites

Chewy Peanut Butter Oatmeal Cookies

More Peanut Butter Cookies you are going to love!

Soft and Gooey Loaded Peanut Butter Cookies from Will Cook for Smiles

Peanut Butter M&M Cookies from Fifteen Spatulas

Peanut Butter Pudding Cookies from Inside BruCrew Life

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Peanut Butter Oatmeal Sandwich Cookies

The softest, most tender peanut butter cookies, sandwiched together with rich peanut butter frosting! These Peanut Butter Oatmeal Sandwich Cookies are a homemade version of the Girl Scout cookies called Do-si-dos. 


For the cookies

  • 1/2 cup butter, softened (1 stick)
  • 1/2 cup butter-flavored shortening*
  • 1 cup dark brown sugar, or light
  • 3/4 cup granulated sugar
  • 1 cup creamy peanut butter
  • 2 large eggs
  • 1 teaspoon vanilla
  • 1 & 1/2 cups flour, spooned and leveled
  • 2 teaspoons baking soda
  • 1 teaspoon kosher salt
  • 1 cup quick oats**
  • 1/2 cup old fashioned oats**

For the frosting

  • 4 tablespoons butter
  • 1/2 cup creamy peanut butter
  • 1 cup powdered sugar
  • 2 tablespoons milk , OR cream plus more
  • 1 teaspoon vanilla


  • In a large bowl or stand mixer, beat 1/2 cup butter and 1/2 cup shortening for 2 minutes, scraping the sides and bottom.
  • Add 1 cup brown sugar and 3/4 cup white sugar. Beat for 2 minutes, until light and fluffy, scraping the sides and bottom of the bowl.
  • Add 1 cup peanut butter and beat until incorporated.
  • Add 2 eggs and 1 teaspoon vanilla. Beat well, scraping sides and bottom.
  • Add 1 and 1/2 cups flour but don't mix it in. Use a small spoon to stir 2 teaspoons baking soda and 1 teaspoon salt into the flour. Then beat the dry ingredients gently into the wet ingredients. Stop mixing when there are still flour streaks.
  • Add 1 cup quick oats and 1/2 cup old fashioned oats. Stir until incorporated but do not over mix. Make sure you scrape the sides and bottom.
  • Cover the bowl and chill the dough in the fridge for 1-3 hours (or overnight).
  • When the dough is chilled, preheat the oven to 350 degrees F. Line 2 baking sheets with silicone baking mats or parchment paper.
  • Use a 1 inch cookie scoop to measure out the dough. 
  • Bake the cookies at 350 for 8-10 minutes until the centers have just barely lost their shine. The edges should be firm. Do not over bake.
  • Let cool on the sheet for 5 minutes before removing to a cooling rack. Let cool completely while you make the frosting.
  • Make the frosting: In a large bowl or stand mixer, beat the butter until it is smooth and creamy. Add 1/2 cup  peanut butter and combine. 
  • Add 1 cup powdered sugar and beat, scraping the sides. 
  • Add 2 tablespoons of milk or cream to start. Add 1 teaspoon vanilla.
  • Add more milk or cream, a couple teaspoons at a time, until it has reached a good spreading consistency that you like. 
  • Spread about a tablespoon of frosting on the bottom of each cookie, then sandwich with another cookie. Devour! So good dipped in milk. 


*You can replace the shortening with butter! The cookies will be delicious, but not quite as soft as with shortening. I tried it both ways. 
**You can use any combination of old fashioned oats and quick oats that you like. All old fashioned, all quick, or a combo. It's really just personal preference! 


Serving: 1 g, Calories: 262 kcal, Carbohydrates: 27 g, Protein: 5 g, Fat: 16 g, Saturated Fat: 5 g, Polyunsaturated Fat: 3 g, Monounsaturated Fat: 6 g, Trans Fat: 1 g, Cholesterol: 25 mg, Sodium: 267 mg, Potassium: 127 mg, Fiber: 1 g, Sugar: 18 g, Vitamin A: 166 IU, Calcium: 20 mg, Iron: 1 mg