01 -
In a large bowl, combine the softened butter and granulated sugar. Beat with a mixer or a wooden spoon until the mixture is light and fluffy.
02 -
Add the egg to the creamed mixture and mix thoroughly until fully combined.
03 -
Gradually add the all-purpose flour to the bowl, mixing until a smooth, cohesive dough forms.
04 -
Gently fold in the chocolate chunks and, if using, the chopped walnuts, ensuring even distribution throughout the dough.
05 -
Using your hands, form walnut-sized balls from the dough and arrange them on a parchment-lined baking sheet, leaving space for expansion.
06 -
Preheat the oven to 350°F (180°C). Bake the dough balls for 12–15 minutes, until lightly golden on the edges.
07 -
Remove the baking sheet from the oven and allow the dough balls to cool briefly before serving.