1cupwhite whole wheat or half all-purpose and half whole wheat130 grams
⅔cupextra dark chocolate chips
½cupwalnutstoasted and finely chopped
Instructions
Preheat oven to 350 degrees. Line a 9-inch square metal pan with foil and spray bottom of pan with cooking spray.
Cream butter and sugar with an electric mixer. Add egg and beat until light and fluffy. Beat in the vanilla, followed by the banana. Beat in baking soda and salt. Scrape sides of bowl. Add flour and stir by hand or using lowest speed of mixer until blended. Stir in the chocolate chips and nuts.
Pour batter into pan and spread to the edges. Bake on center rack for 25-30 minutes. Remove from oven and cool on a rack to room temperature. For cleaner cuts, chill an hour before slicing.
Lift foil from pan, place on cutting board, Cut into 16 (or 9) squares.