My Peanut Butter Oatmeal Sandwich Cookies are chewy oatmeal cookies with a creamy peanut butter filling in the middle. They taste just like the classic Girl Scout cookies and are the perfect homemade treat for peanut butter lovers.
Homemade Peanut Butter Oatmeal Sandwich Cookies
If you love peanut butter, you are going to love these cookies! These homemade peanut butter oatmeal sandwich cookies are chewy, sweet, and packed with peanut butter flavor. Two soft oatmeal cookies get sandwiched together with a creamy peanut butter buttercream filling that makes them taste just like the classic Girl Scout cookies.
I think it’s pretty obvious by now that I love peanut butter recipes 😂 Between my Peanut Butter Sugar Cookies and my Peanut Butter Chocolate Chip Granola Bars, peanut butter always finds its way into my kitchen. These cookies are another family favorite because they’re fun to make, easy to share, and honestly hard to stop eating once they’re sitting on the counter.
Recipe Tips + Helpful Notes
- Peanut butter — Use creamy peanut butter for both the cookies and the filling so everything stays smooth and easy to mix.
- Oats — Quick cooking oats work best here because they give the cookies that soft, chewy texture.
- Cookie size — Keep the cookies similar in size so they sandwich together nicely. I like using a small scoop or measuring spoon to keep them even.
- Flatten the cookies — Gently press the dough down with a fork before baking so they spread into the perfect sandwich cookie shape.
- Filling — Make sure the cookies are completely cooled before adding the peanut butter filling so it doesn’t melt.
- Make ahead — You can bake the cookies ahead of time and fill them when you’re ready. They’re great for cookie trays, parties, or keeping a stash in the freezer.
How to Make My Peanut Butter Sandwich Cookies
Cream together the ingredients until fluffy.
Drop teaspoon sized dough onto cookie a sheet and bake. Tip: These won’t look done at 11 minutes, but they will be. We want them chewy, so they will harden up some while cooling down.
Time to make that yummy sandwich filling now!
Spread filling on one cookie and then press down with another. Sandwich cookies are ready – go eat them all! Enjoy!
Storing Peanut Butter Sandwich Cookies
Store these cookies in an airtight container at room temperature for up to 4 days.
For longer storage, freeze the assembled cookies in a freezer-safe container for up to 3 months. Let them thaw at room temperature before serving.
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Peanut Butter Oatmeal Sandwich Cookies (Girl Scout Copycat)
PrintIngredients
- 1/2 cup butter softened
- 1/2 cup creamy peanut butter
- 1/3 cup white sugar
- 1/3 cup brown sugar
- 1 egg
- 1 teaspoon vanilla extract
- 3/4 cup flour
- 1/2 teaspoon baking soda
- 1/4 teaspoon baking powder
- 1/2 teaspoon salt
- 1 cup quick cooking oats
For the filling:
- 3 tablespoons butter softened
- 1 cup confectioners’ powdered sugar
- 1/2 cup creamy peanut butter
- 2 tablespoons milk
Instructions
- Preheat oven to 350 degrees F. Spray cookie sheets with nonstick spray or put down silicone baking mats.
- In a large bowl cream together 1/2 cup butter, 1/2 cup peanut butter, 1/3 cup white sugar, 1/3 cup brown sugar, egg and vanilla until fluffy.
- In the same bowl, add flour, baking soda, baking powder and salt and continue mixing. Add oats to bowl and stir with a spoon to combine.
- Drop teaspoon sized dough onto cooking sheet, gently pressing each one down with a fork to flatten. This should make 24 cookies. Bake for 11-12 minutes, or until they are light brown. Remove from the oven and allow to cool.
To make the filling:
- In a medium-sized bowl mix butter, powdered sugar, peanut butter and milk together until smooth.
- Spread filling on half of the cookies, and then gently press down another cookie on top forming a cookie sandwich.
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