Preheat the oven to 375 degrees. Place the butter in the bowl of an electric mixer and beat until creamy. Add the sugars and beat until light and fluffy. Add the egg and vanilla and beat well to combine. Sift together the dry ingredients and add to the batter, mixing well. Remove bowl from mixer (be sure to scrape the beater) and stir in the nuts and chocolate chunks by hand. Drop by teaspoons onto greased cookie sheets and bake 8 to 10 minutes until lightly browned. Cool 5 minutes on sheets then remove cookies with a spatula to racks to cool.
c.1997, M.S. Milliken & S. Feniger, all rights reserved