01 -
In a large mixing bowl, cream the softened butter and granulated sugar together with a mixer or wooden spoon until pale and fluffy. Add the egg and mix until fully incorporated.
02 -
Gradually add the all-purpose flour to the wet mixture, blending until a soft dough forms. Fold in the chocolate chunks and walnuts, if using.
03 -
Portion the dough and roll into walnut-sized balls by hand. Arrange them on a baking sheet lined with parchment paper, spacing each approximately 2 inches apart.
04 -
Preheat the oven to 350°F (180°C). Bake the dough balls for 12 to 15 minutes, or until the edges begin to turn golden. Remove from oven and let cool before serving.