Once the dough is chilled, press 1 Tbsp balls into the each mini muffin cup. Mold the dough so that it's pressed up along the sides and hollow in the middle, like a little cup.
Bake until golden brown, 13-14 mins.
When the cups come out of the oven, they will have puffed up and lost some of their shape, quickly (without burning your finger tips off!) press the centers down slightly to restore their shape. Let cool completely.
Remove the cups from the muffin tins and fill with strawberry jam and drizzle with melted peanut butter (optional)