Veg-All Casserole

I fix this every Christmas and Thanksgiving. But I must confess that I use a lot more cheese. LOL Everything tastes better with cheese. :D

1 large can vegall, drained
1 can water chestnut drained and sliced
1 can cream of chicken
1/2 cup mayonaise
1 small onion, diced
1 cup grated cheese
1 cup Ritz crackers
1/3 cup melted margarine
Combine 1st five ingredients. Pour into greased dish. Top with cheese and crackers. Pour on melted buter. Bake at 350* for 20 minutes or until bubbly.