I had to make some revisions based on what I had on hand... I used Rotini pasta, omitted celery since I was out and used a jar of 4-cheese spaghetti sauce since I didn't feel like making the sauce from scratch. I also added some oregano, basil, parsley, rosemary, pepper & a little sugar to cut the acidity of the sauce. I just mixed everything together in my casserole dish instead of bothering with layers & baked it at 350° for 25 minutes in our convection toaster oven so I didn't have to heat up the entire house... Super super good!!