05Add eggs, one at a time, beating well after each addition.06Stir in milk and vanilla.07Combine flour, baking powder, salt and cinnamon in small bowl.08Add to butter mixture and stir until just blended.09Mix dates and walnuts gently into batter.10Transfer batter to pan; smooth top.11Bake until top is brown and tester comes out clean (with a few moist crumbs attached), about 35 minutes.12Cool 10 minutes.13Run knife around edge of pan to loosen.14Reverse carefully onto cookie sheet.15Peel off parchment.16Invert again.17Cool. Cut into bars.18Sift icing sugar over.