I did it! I made this very recipe tonight! And I followed the recipe PRECISELY!
One package Kirkland brand brats. In the boiling water with beer (subbed Dos Equis) for ten minutes. Didn't want to waste the onion so I put it in with the celery rather than in the boil. Campbell's Cream of Cheddar isn't sold at the Tucson Frys (and I hate mushrooms), so I subbed two cans of GF Cream of Chicken soup and two cups of grated sharp cheddar.
@NoahPaulLeGies He didn't specifically say to not add them. Or how many not to add. #ThanksForNoticing