If you just want to stuff the cavity, then allow 1/2 cup stuffing per pound of turkey. If you want extra stuffing and plan to bake it separately, then allow 1 cup of stuffing per pound, and even more if it's a perennial favorite. While stuffings can be made from all different types of breads, grains and rice, here's a handy rule-of-thumb to follow: plan on using a single slice of bread to make 1/2 cup of stuffing when mixed with added seasonings and aromatics.