Preparation:
Place butter, brown sugar, eggs, and vanilla in bowl. Attach bowl and flat beater. Turn to speed 4 and beat 1 minute. Stop and scrape bowl.
Add flour, baking powder, and salt. Turn to speed 2 and beat 15 seconds. Stop and scrape bowl. Turn to stir speed and quickly add nuts and chocolate chips, mixing just until combined.
Press dough into a 9x13x2-inch greased and floured pan. Bake at 350 F for 25 to 30 minutes. Cool in pan, then cut into bars. |