Stuffed shells are a classic Italian recipe consisting of cheese or meat-stuffed pre-cooked pasta shells that are baked with a red or white sauce until the cheese stuffing is hot and melty.
Cook the Spinach: Add the chopped spinach into the pan and cook until wilted. Add everything to a plate and spread out slightly and chill in the refrigerator.
Boil the Noodles: Boil the shell pasta until al dente and then chill immediately in cold ice water. Drain and then spread out on a sheet tray lined with parchment paper and set to the side.