1Preheat oven to 400.
Mix together the beef, onions, 3/4 cup enchilada sauce and 1 cup cheese. Spoon onto tortillas. Roll up, place seam side down in a lightly greased 13x9 baking dish. Pour remaining enchilada sauce over top. Sprinkle on remaining cheese. Bake 15-20 minutes. Serve with Spanish rice and/or refried beans.