1Heat oven to 350°. Spray 2-quart casserole with cooking spray.
2Cook peanut sauce, broth, peanut butter, frozen vegetables and stir-fry noodles in 3-quart saucepan over medium-high heat 5 to 7 minutes, stirring frequently, until hot. Stir in chicken. Spoon into casserole.
3Mix chow mein noodles and peanuts; sprinkle over chicken mixture. Bake uncovered about 30 minutes or until mixture is hot. Let stand 5 minutes.