1 (16 oz.) can Veg All, drained
1 med. onion, chopped
1/3 c. mayonnaise
1/2 stick butter
1 can cream of mushroom soup
1 can sliced water chestnuts, drained
1 c. grated sharp cheddar cheese
1 tube pkg. Ritz crackers, crushed

Mix together all ingredients except crackers. Pour into baking dish. Bake at 350 degrees until bubbly (about 25 minutes).