beat in the eggs, one at a time, and finally the vanilla extract.
06Stir the flour mixture into the butter mixture, then the nuts and the chips.07Spread the batter in the prepared pan and bake for about 30 minutes, until well risen and firm to the touch.08Cool in the pan on a rack.09After cake is cool, invert onto a cutting board and peel away the paper.10Cut into 2-inch squares.11Storage: keep the blondies in a tin or plastic container with a tight-fitting lid.12Or wrap individually and freeze in a tightly closed plastic container.