01 -
Mix the cocoa powder, flour, baking soda, and salt in a medium bowl. In another large bowl, beat together the unsalted butter with both sugars until creamy. Stir in the egg and vanilla, then slowly combine with the dry mixture until just blended.
02 -
Spoon bits of peanut butter on top of the chocolate dough. Use a skewer or knife to give it a gentle swirl effect. Keep the swirls visible by not overmixing.
03 -
Cover the bowl with foil or plastic wrap and let the dough chill in the fridge for a minimum of 1 hour.
04 -
Set your oven to 350°F (175°C) and prepare baking sheets with parchment paper. Scoop out dough 1 tablespoon at a time onto the sheets. Bake for 10-12 minutes, leaving the cookies soft in the center but firm at the edges.
05 -
Let the baked cookies sit on the tray for about 5 minutes, then move them over to a rack to cool down completely.