I'm not sure how to do this. MIL made this all the time but I don't like
Italian sausages and didn't eat them. I know sometimes she put them in the
gravy (red sauce) and served over pasta. When she did this, my husband
would pick them out because he hates the gravy.

In my mind somehow I am confusing these with fajitas I think. Do I put
onion in there as well?

If I don't put them in the red sauce, how do I serve them? Can I just serve
them along with some rice or potatoes? Is it served on a bun?

I bought some sausage at Costco because it is so cheap there, but I have far
more than I can use in the casserole recipe. I do plan to make that for
Christmas morning and also New Year's day. They expire on Jan 1. I do not
want to put them in the freezer because I know they will never get eaten if
I do. I will never eat them. Daughter will eat them in the casserole but
not sure she will eat them otherwise.

If I do make them in gravy, I can just eat around them. And I can just pick
them out for husband. He will eat them when made that way. He just doesn't
like a lot of the gravy.

Thanks!