CHEF RV’s UPGRADED CHOCOLATE CHIP COOKIES!

UPGRADED CHOCOLATE CHIP COOKIES 140g salted butter ½ cup brown sugar ¼ cup + 2 tbsp. white sugar 1 piece cold egg 1 ¼ cup all purpose flour ½ tsp. baking soda ½ cup dark chocolate chips ½ cup milk chocolate chips ½ cup coarsely chopped walnuts