Mix all ingredients except walnuts. Spoon into a 2 quart casserole.
Sprinkle with nuts. Bake for 40 minutes or until thoroughly heated.
*Note: I like to use Jenni-O's pre-cooked turkey. I'll try to post a picture of it. I think it turns out really well. And it saves a lot of time. You can also use the pre-chopped frozen onions to make the dis go even faster.