You will probably have a hard time finding anything pumpkin related that is edible here....frozen pumpkin pies just don't exist I'm afraid! :-/
French Fried onions are also hard to find. I've heard though that a substitute for them can sometimes be found near the salad dressings, etc in some bigger Tescos, etc. But the french cut green beans are bit more elusive! The year I did Thanksgiving here I think I ended up getting regular canned green beans and cutting each and very one of them into thin strips. I was slightly crazed at that point, yes.
Basically, just take very thin cut green bean (tinned ones so they're already cooked), mix with a can of Cambells condensed cream of mushroom soup, top with french fried onions and bake in a moderate oven for about 20 minutes until bubbly and crunchy.
More importantly though, Britwife, is sweet potatoes! This is easy to make here because the ingredients are so basic.
Just take a couple of fresh sweet potatoes, wash and peel. Put them into a saucepan with about half a block of butter and a touch of water. Add a cup or two of dark brown sugar and simmer until the potatoes are nice and tender. (Takes a good half an hour or so.) Mash and add any other ingredients you like (some people add nutmeg, cinnamon, walnuts, etc). Pop it into a cassarole dish and top with little white marshmellows (if you can find them!) and bake in the oven at 180-200C until marshmellows are brown and gooey.
Thanksgiving dinner isn't easy to cook here and my first year I tried to do it all 'just like back home'. I wouldn't advise this method...it nearly drove me to insanity. My advice is to have a few American things that you can find and suplement with any British foods you and Stu enjoy. 'Cause, just as Hamish reminded me when I was in tears five minutes before serving our Thanksgiving meal to his parents, it ain't about the pie....it's about the company.
Good luck!
