01 -
Preheat oven to 350°F (175°C). Line a baking sheet with parchment paper.
02 -
In a large bowl, cream together butter, peanut butter, granulated sugar, and brown sugar until light and fluffy.
03 -
Add in the egg and vanilla extract, mixing until well combined.
04 -
In a separate bowl, whisk together flour, baking soda, and salt. Gradually add to the wet ingredients and mix until a dough forms.
05 -
Roll dough into small balls (about 2.5 cm), shape into ovals, and press with a fork to create the classic crosshatch pattern. Sprinkle tops lightly with sugar.
06 -
Bake for 8–10 minutes until lightly golden. Let cool completely.
07 -
For the filling, beat together peanut butter and butter until smooth. Add powdered sugar and vanilla, mixing until creamy. Add milk one tablespoon at a time until desired consistency is reached.
08 -
Once cookies are cool, spread or pipe filling onto the flat side of one cookie and top with another to create sandwiches.