The weight-loss gospel, translated for dieters pressed for time. As in Jean Nidetch's freight Watchers Food Plan Diet Cookbook, the recipes are appetizing and cover the range of contingencies--from solo eating to a tableful of guests, and from appetizers to after-dinner snacks. Here, virtually all can be prepared in less than a half-hour, and require a minimum of fussing. The dishes are also in line with both the Weight Watchers regimen (an appendix categorizes all dishes according to the WW exchange system) and with today's healthier nutritional habits. (There is little use of low-cal substitutes --rather, new tastes are introduced.) A bonus is ""Appliance Appeal"": foods for microwave preparation (artichoke-cheese pie), for pressure cooker (a side dish of vegetable risotto), blender (buttermilk-cheese salad dressing), and food processor (veal patties in parsley sauce). A helpful collection altogether for the Weight Watchers crowd.