Unforgettable Chicken Casserole

INGREDIENTS

• 3 cups chopped deli-roasted chicken
• 2 cups finely chopped celery
• 1 cup (4 ounces) grated Cheddar cheese
• 1/2 cup slivered almonds
• 1/2 cup light sour cream
• 1/2 cup light mayonnaise
• 1 (10 3/4-ounce) can reduced-sodium cream of chicken soup
• 1 (4-ounce) can water chestnuts, drained and chopped
• 1 1/2 cups French fried onion rings