01 -
Set the oven to 240°C and cover baking trays with parchment paper.
02 -
Combine the flour, cornstarch, salt, and baking soda using a whisk.
03 -
In a large bowl, blend the cubed butter with both sugars, the egg, and the vanilla extract.
04 -
Carefully fold the dry ingredients into the wet mix.
05 -
Stir in the chocolate chips and nuts until they're well distributed.
06 -
Scoop out dough balls with a tablespoon and place them on the tray.
07 -
Bake for about 6 to 7 minutes, or until the tops are lightly golden.
08 -
Cool the cookies on the tray—they'll finish setting as they cool down.