Ingredients

For Peanut Butter Cookies:

• 1½sticksunsalted butter,room temperature
• ½cuppacked dark-brown sugar
• ⅓cupgranulated sugar
• ½cupchunky peanut butter
• 1cupall-purpose flour,plus 2 tbsp
• 1cupquick oats
• 1tspbaking soda
• 1tspsalt

For Peanut Butter Buttercream Filling:

• ½stickbutter,room temperature
• 1½cupspowdered sugar
• 1tbspmilk
• ½cupcreamy peanut butter

Directions

1. Preheat oven to 350 degrees F. Line 2 baking sheets with parchment paper or a silicone silpat mat.

2. In a stand mixer, cream together the 1½ sticks butter, dark brown sugar, and granulated sugar.

3. When fluffy and lightened, add in the peanut butter and cream until well combined.

4. Add in the flour, oats, baking soda, and salt and mix until just combined.

5. Roll out the dough to ¼-inch thick.

6. Using a 2-inch cookie cutter or drinking glass dipped into flour, cut out the cookies.

7. Place onto a baking mat an inch apart and chill the dough on the sheets for 15 to 20 minutes before baking.

8. Bake for 9 to 11 minutes or until golden brown.

9. Let cool completely while making the peanut butter filling.

10. Add the butter, powdered sugar, and milk together in a stand mixer and mix on low speed at first moving up to medium-high speed until fully combined and fluffy.

11. Add in the ½ cup peanut butter and combine until smooth, fluffy, and creamy.

12. Using a piping bag or a spoon, put about a tablespoon between two cookies to make the sandwiches.