Brown beef with bacon;add onion and cook until soft. Drain and add paprika,salt,pepper;mix well. Stir in soup;cook,uncovered,over low heat for 20minutes,stirring often. Add sour cream and heat through w/o boiling. Toss noodles with butter;top with stroganoff.
If you want to make the cheese version-add the Cheese the top or if you want it extra cheesy,you can add bits through out the casserole,then you'll have little pockets of cheese! Yum.(cubes or shredded)