01 -
Heat oven to 350°F. Line baking sheet with parchment.
02 -
Mix peanut butter, sugar, egg, and vanilla until smooth.
03 -
Form dough balls, place on sheet, press with fork in crisscross pattern.
04 -
Bake 10-12 minutes until edges brown. Cool fully.
05 -
Beat butter with brown sugar until smooth. Mix in powdered sugar and cream until fluffy.
06 -
Spread filling on one cookie, top with another.