Everything worked out perfectly by simply following the directions, well mostly.
I didn't have the pimentos so they were omitted. I subbed cream of chicken for the mushroom soup to suit my wife's taste preference. And I had shredded sharp cheddar, not American, to mix. My wife also donated 1/3 cup of crushed Cheez-its Duos in Smokey Cheddar and Monterey Jack flavor (from her own snack repertoire) to fill in for the 8 round cheese crackers.
The only real addition I made was to thinly cover the top of the baked casserole with finely shredded Mexican blended cheese and returned the dish to the oven uncovered for a light broil (to get a light crunch and melt the Mexican cheese).
Again, I applaud this simple, trusty, and tasty recipe which lends itself well to a bit of personal taste. THANK YOU FOR LISTING IT.

I love this! my second round of making this is in the oven right now! I think whats great about it is that you can add whatever is in your fridge to this to make it conform to your tastes. Today I put bacon and italian herbs because the first time I made it to recipe and I thought it was kind of bland. Awesome simple recipe!