Six O'Clock Solution: Cheesy Broccoli Gratin

If you spread food out in a single layer and bake it, you’ll get toasty food with the ingredients evenly distributed. U.S. cookbook author Raquel Pelzel has made a specialty of this kind of cooking. Pelzel has blue chip credentials. She was an editor at Cook’s Illustrated and has written more than 20 cookbooks.  Her new cookbook, Sheet Pan Suppers Meatless (Workman/Thomas Allen, $25.95), should help the cook who needs to create dinner in a big hurry. Its 100 recipes show the ver