BEEF AND CHEESE MEXICAN SANCHILADAS

Press the sour cream mixture through the hole in the corner of the bag, onto the beef mixture over the top of the cheese and the lettuce, making two strips of sour cream the length of the beef mixture, or as desired.
Roll the flour tortilla around the beef filling, placing the sanchilada into a greased elongated and shallow glass baking dish for one, or create all four sanchiladas, placing them side-by-side into a larger baking dish.
Pour enchilada sauce, as desired, over the top of the sanchiladas, then top with more shredded cheese; garnish with scallions or cilantro.
Heat the prepared sanchilada for a few seconds in the microwave until heated throughout; stack tortilla chips alongside the sanchilada and serve at once.