Firefighter’s Chicken Spaghetti

Ingredients

• 12 ounces uncooked spaghetti, broken in half
• 1 can (10-3/4 ounces) condensed cream of chicken soup, undiluted
• 1 can (10-3/4 ounces) condensed cream of mushroom soup, undiluted
• 1 cup sour cream
• 1/2 cup whole milk
• 1/4 cup butter, melted, divided
• 2 tablespoons dried parsley flakes
• 1/2 teaspoon garlic powder
• 1/2 teaspoon salt
• 1/4 teaspoon pepper
• 2 cups shredded part-skim mozzarella cheese
• 1 cup grated Parmesan cheese
• 2 to 3 celery ribs, chopped
• 1 medium onion, chopped
• 1 can (4 ounces) mushroom stems and pieces, drained
• 5 cups cubed cooked chicken
• 1-1/2 cups crushed cornflakes