
Preheat oven to 350°F (175°C) and grease a mini muffin tin.
Scoop cookie dough into each cavity, filling halfway, and press down gently.
Bake for 10-12 minutes until golden on edges; cool slightly before pressing down centers.
For ganache: Chop chocolate and place in a heatproof bowl. Heat cream until simmering, pour over chocolate, let sit for 1 minute, then whisk until smooth.
For peanut butter filling: Mix peanut butter, sifted powdered sugar, butter, and salt until smooth.
Fill cooled cookie cups with peanut butter mixture and top with ganache.
Chill in refrigerator for at least 30 minutes before serving.