01 -
Preheat your oven to 175°C (350°F) and line a baking sheet with parchment paper.
02 -
In a large bowl, cream together softened butter, peanut butter, brown sugar, and granulated sugar until light and fluffy.
03 -
Beat in the egg and vanilla extract until well incorporated.
04 -
In a separate bowl, whisk together the all-purpose flour, baking soda, and salt.
05 -
Gradually add the dry ingredients to the wet mixture, stirring just until combined. Fold in optional additions if desired.
06 -
Scoop tablespoon-sized portions of dough, roll into balls, and place on the prepared baking sheet about 5 cm (2 inches) apart.
07 -
Bake for 8–10 minutes, or until edges are set and centers look slightly underbaked.
08 -
Let cookies cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.