In a large skillet, cook ground beef and onion until beef is no longer pink, breaking it into crumbles; drain. Stir in the tomatoes, enchilada sauce and seasonings. Bring to a boil. Reduce heat and simmer, covered, for 5 minutes. Pour half the meat sauce into a 13x9-in. baking dish. Set aside. , Wrap the stack of tortillas in foil; warm at 350° for 8-10 minutes. Spread each warm tortilla with cream cheese and top with chiles. Fold tortillas in half. Arrange folded tortillas over meat sauce; pour remaining sauce over top. , Cover and bake at 350° for 15 minutes. Sprinkle with cheese; bake until cheese is melted, about 5 minutes longer. If desired, top with cilantro.