Stuffing can be made a day ahead and reheated in a 375F oven, in a baking dish covered with foil, 25 to 30 min.
To make Stuffing Muffins, omit broth. Let sausage and bread mixture cool in pot for at least 10 min before stirring in 3 eggs, beaten. Scoop even amounts of stuffing into a lightly oiled 12-cup muffin pan. Bake at 375F in bottom third of oven until tops are golden, about 10 min. Stuffing Muffins can be made in advance and reheated in a 375F oven for 10 min before serving.