I follow Alton Brown's Green Bean Casserole for the most part and have had great success making this recipe. My dad always complains about having mushrooms in the dish and he would have to pick them out. But this year I would like to try making without mushrooms.
My goal is to use another vegetable to replace the mushrooms when making the creamy sauce. From what I have heard you can use cream of celery soup but I would still like to make the cream myself. Can I use cut up celery as a replacement in Alton Brown's recipe? Do I need to alter cooking times? I think I would use 1 cup of chopped up celery.