Chicken And Ham Casserole

Ingredients

• 3 chicken breasts, halved (about 3 lb.)
• 1/4 c. (1/2 stick) butter or margarine
• 1/4 c. all-purpose flour
• 1 c. milk
• 2 Tbsp. Parmesan cheese
• 2 Tbsp. chopped parsley
• 1 (10 3/4 oz.) can condensed chicken broth, undiluted
• 1/2 c. chopped onion
• 1 c. sliced mushrooms
• 1/4 tsp. nutmeg
• 3 slices baked ham (1/4-inch thick)