Brown the ground beef. Mix together the cooked ground beef, refried beans, 1/2 cup tex mex cheese, softened cream cheese, 1/2 the tomato sauce, taco seasoning, and green chilies in a large bowl.
With a small spoon or piping bag, fill the manicotti noodles with the mixture. Pour the rest of the tomato sauce over everything. Top with a sprinkling of shredded cheese. Place in a square foil casserole dish. Cover with two layers of aluminum foil. Freeze.
Bake at 350° for one hour if thawed or one and a half hours if cooking from frozen.