Make a white sauce of the butter, flour and cream.
Add salt, pepper and granulated bouillon dissolved in just a little hot water. Add the mushroom soup.
Saute the mushrooms in a little butter and add with the chestnuts.
Place in a buttered casserole and top with cheese.
Place in a 350˚ F. oven and heat for 20-30 minutes, until cheese is melted and dish is bubbly.
This is a huge casserole. Great for company or to take to a covered dish meal. For a single family, prepare two casserole dishes and freeze one after fixing. Be sure to thaw completely before reheating.