Homemade Green Bean Casserole - Can be made Vegan!

This recipe came about out of necessity.  I have a vegan and vegetarian daughter.  Green bean casserole has always been one of their favorites.  This is so much better than canned beans and canned soup.  Trust me on this one, it's a favorite and it's fabulous!  To make this dish you will need:
2 bags (48 ounces) of French green beans (or Haricot Verts)
1 stick of butter (Vegan - Earth Balance)
16 ounces of mushrooms processed in a food chopper/processor
1 medium onion processed in the a food chopper/processor
Salt and pepper to taste
2 tablespoons flour
1 heaping tablespoon Vegetable Better Than Bouillon
1 pint low fat Half n Half (Vegan - Soy Milk)
1 Can French's French Fried Onions.

1.)  To make this super easy, you can microwave the green beans right in the bag.  Do it in batches.  Since all microwaves vary, you will need to time your green beans carefully.
2.)  In the meantime, in a decent size saucepan.  Melt the butter.  Add in the mushrooms and the onions.  Allow the vegetables to get nice and soft.
3.)  Add the salt, pepper, bouillon and the flour.  Allow this to cook for a few minutes to allow get rid of the flour flavor.  Next stir in the Half n Half.  Let this cook for a few minutes to thicken.
4.)  Using a hand blender, smooth out the sauce.
5.)  In a large casserole dish, mix the sauce with the green beans.  Sprinkle with the fried onions.  Cover with foil and bake at 350 degrees for thirty minutes.  Remove foil and bake for another 5 minutes.