Rice and Chicken Bake

Ingredients

• 2 cups cubed cooked chicken
• 2 cups cooked rice
• 1 can (10-3/4 ounces) condensed cream of chicken soup, undiluted
• 1 can (8 ounces) sliced water chestnuts, drained
• 1 jar (4-1/2 ounces) sliced mushrooms, drained
• 2 celery ribs, thinly sliced
• 3/4 cup mayonnaise
• 1 tablespoon chopped onion
• 1 tablespoon lemon juice
• 1/2 teaspoon salt
• 1/3 cup crushed saltines (about 10 crackers)
• 1 tablespoon butter, melted