In skillet, brown burger with onion. Spoon off fat. Add beef broth, soup, and water. Heat to boiling. Reduce heat to low. Add sour cream and uncooked noodles. Simmer 10 minutes or until noodles are tender. Stir often.
THM style- use homemade cream of mushroom soup found here http://gwens-nest.com/cream-of-mushroom-soup-recipe/
Use Dreamfields rotini noodles. I also have used greek yogurt instead of sour cream
Recipe by The Journey of a Steward at http://thejourneyofasteward.com/quick-easy-simple-stroganoff-recipe.html