In a medium bowl, mix all ingredients for the filling until the well-combined dough forms. Refrigerate for the time you melt the chocolate.
Melt 1/2 cup (85g) of chocolate in a double boiler or a microwave in a microwave save dish. and distribute it evenly into 6 muffin cups.
Remove the peanut butter filling from the refrigerator. Divide it into six pieces and form a disk – a flattened ball. Place each disk into the chocolate cup and help it dive deeper, so the chocolate will cover the walls (not the top) flatten it a bit so it takes the space of the cup and is flat on top. Refrigerate for the time you melt the rest of the chocolate.
Melt the rest of the chocolate – 1/3 cup (60g) in a double boiler or a microwave in a microwave save dish. Remove the cups from the refrigerator and distribute the chocolate evenly on top of the peanut butter filling. Refrigerate for 20 minutes before serving.
Store in the refrigerator or in a dark cold place in an air-tight container.