Cut two 25x3-in. strips of heavy-duty foil; crisscross so they resemble an X. Place strips on bottom and up sides of a 5-qt. slow cooker. Coat strips with cooking spray., Combine the first 6 ingredients. Crumble beef over mixture and mix lightly but thoroughly. Shape into a round loaf; place in center of strips in slow cooker. Cook, covered, on low 5-6 hours or until a thermometer reads at least 160°. , In a small bowl, whisk ketchup, brown sugar, mustard and Worcestershire sauce. Spoon over meat loaf. Cook until heated through, about 15 minutes longer. Using foil strips as handles, remove meat loaf to a platter. Let stand 10-15 minutes before slicing.