I'm really hoping someone can help me here. My Mom used to make this wonderful casserole for Christmas mornings. She would fix it the night before and bake it while we opened presents. She would never tell us exactly what was in it, and we only had it once a year so we never did figure it out. Well, this year my sister is having Thanksgiving dinner with her in-laws. She didn't want to have lunch with Dad and me and then turn right around and have a big dinner so I suggested that we meet for a special brunch. Then, since it will be at my house, I got elected to provide the main dish - and everyone wants Mom's Christmas Morning Casserole. I know it has sausage, cheese, and cream of mushroom soup in it. All the receipes I've found list slices of bread, mustard and some other things in them that just don't seem right. So - does anyone make this? And would you share your receipe?