6 c. turkey, cut up
1/2 c. mayonnaise
1 1/2 c. chopped celery
3/4 c. chopped onion (optional)
1 can cream of mushroom soup
3 c. grated cheese (or cut up in sm. pieces)

Heat mixture in 350 degree oven for about 1/2 hour or until warmed through. Fill warmed hamburger buns and serve.