In a large bowl, mix potatoes, baking mix, stuffing and eggs until blended. Refrigerate, covered, 30 minutes., Preheat oven to 400°. In a shallow bowl, mix onions and bread crumbs. Shape 1/4 cupfuls of the potato mixture into 3/4-in.-thick patties. Dip patties in crumb mixture, patting to help coating adhere., Transfer to two greased 15x10x1-in. baking pans. Bake 35-40 minutes or until golden brown, turning once. Let stand 5 minutes before serving.