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