Receta Tetrazzini Casserole

4 tablespoons butter, 1 medium onion, chopped (about 1/2 1 can (10 1/2 ounces) Campbell’s® Condensed Cream of Mushroom 1 ½ cups ¾ cup grated Parmesan 3 cups cubed cooked 1 small can English peas, 8 ounces (1/2 of a 1-pound package) spaghetti, prepared to package directions (about 4 cups) 1/3cup Set the oven to 400°F.  butter.  Stir the melted butter and bread crumbs in a small Heat the remaining butter in a 4-quart saucepan over heat.  Add the onion and cook for 1 minute.  Stir in the soup, milk cheese. Add the chicken, peas and spaghetti and toss to coat. Pour the into a 13x9x2-inch baking dish sprayed with non-stick. …