In a large deep skillet, saute 1/2 pound crumbled sweet Italian sausage in 6 tablespoons butter for 5 minutes. Season with salt and pepper and add 1 diced fennel bulb, 1 diced onion, and 1 tablespoon each chopped sage and thyme; cook 5 minutes, then add 1 diced peeled apple and cook 2 minutes. Pour in 2 1/2 to 3 cups chicken broth. In a large bowl, mix 2 eggs and 1/4 cup chopped parsley. Add to the bowl 16 cups toasted white bread cubes and the hot broth mixture. Gently toss the stuffing, then spread in a buttered 9-by-13-inch baking dish. Dot the top with butter or turkey pan drippings, cover and bake 30 minutes at 350. Uncover and bake until golden, 20 more minutes.