Chicken and Rice Casserole

INGREDIENTS

• 1 cup mayonnaise
• 1 (8-ounce) can water chestnuts, drained and chopped
• Pinch salt
• 1 cup grated sharp Cheddar
• 2 tablespoons butter or vegetable oil
• 1 (4-ounce) jar pimentos
• 1 (10 3/4-ounce) can condensed cream of celery soup
• 2 (14 1/2-ounce) cans green beans, drained and rinsed
• 1 medium onion, peeled and diced
• 1 (6-ounce) box long-grain wild rice, cooked according to package directions
• 3 cups diced, cooked chicken