You can assemble this one of two ways; My mom did it layer by layer. IE; noodles, soup, cheese, in however many layers it takes. I just mix it all together and put it in the baking dish. Either way, it comes out the same, YUMMY!!! I will give you my version.
Cook and drain the noodles. In a large bowl, mix noodles, cheese and tomato soup. Pour into a greased 9x13 baking dish. For added flavor I like to place about 3 strips of bacon on top.
As far as cook time goes, I put 30 minutes but I actually go by the look. If the bacon is done and the cheese is bubbly and it's starting to look a bit brown and crusty on top then it's done.
For a change, try different kinds of pasta and mix up your cheeses. The shredded Fiesta Blend is good. I would think a tomato/basil soup would give it a different taste too.