Good-Cooking - Chicken Salad Bake

Ingredients

• 1 cup sliced celery
• 1/2 cup chopped onion
• 3 tablespoons butter
• 1 1/2 cups mayonnaise
• 1 1/2 cups heavy cream
• 2 tablespoons lemon juice
• Salt and pepper
• 5 chicken breasts, cooked and chopped
• 2 cans water chestnuts, sliced
• 2 cups Cheddar cheese, shredded