Spray broiler rack w/ nonstic Pam, preheat. In med. bow. combine all ingred. except lettuce and pitas;shape evenly into 4 patties. Place patties on prepared rack;broil 10 minutes. turning once until meat is cooked through. To serve arrange lettuce and burgers in toasted pitas. Each serving: 2 1/2P, 1 V, 1 B 20 opt. cal. From: