Stuffed Shells with Ground Beef

Another wonderful make-ahead dinner is stuffed shells with ground beef. I have made a similar dish with ricotta and spinach and the premise is the same -- make ahead and bake what you need. Perfect for a healthy weeknight meal. These are hearty shells, full of ground beef and loads of cheese. Serving them with sour cream is decadent and it's almost like eating a plate of nachos. In f