01 -
Preheat oven to 175°C. Line a 12-cup muffin tin with silicone or paper liners.
02 -
In a large bowl, beat together peanut butter, softened butter, brown sugar, and granulated sugar until light and fluffy.
03 -
Add egg and vanilla extract to the bowl, mixing until just combined.
04 -
In a separate bowl, whisk together flour, baking soda, and salt.
05 -
Gradually incorporate the dry ingredients into the wet mixture, mixing until barely combined.
06 -
Fold in semi-sweet chocolate chips.
07 -
Scoop dough into prepared muffin liners, filling each about three-quarters full.
08 -
Sprinkle extra chocolate chips on top of each portion. Bake for 12–14 minutes, until tops are golden and centers remain slightly soft.
09 -
Allow cookie cups to cool in the pan for 5–7 minutes before transferring to a wire rack to cool completely.