I've tried lots of stroganoff recipes using regular meat but it always ends up too dry. This version using ground beef is always good.
From 365 Great 20 Minute Recipes
2 tbsp butter
1 medium chopped onion
2 cups sliced mushrooms
1 lb ground sirloin
1/2 tsp salt
1/2 tsp pepper
2 tbsp flour
1 1/4 cup beef broth
1 1/2 tsp Worchestershire Sauce
2/3 cup sour cream
In a large skillet, melt butter over medium heat. Add onion and mushrooms, and cook stirring frequently until onion wilts and mushrooms give off liquid and are lightly browned, about 5 minutes
Add the ground beef, season with salt and pepper, and cook stirring frequently, until meat loses pink color, about 5 minutes. Sprinkle flour over meat mixture, raise heat to medium high and cook, stirring for 1-2 minutes to cook flour. Stir in the broth and bring to a boil, stirring until thickened, about 1 minute. Season with Worchestershire.
Remove from heat and stir in sour cream Return pan to medium heat and cook, stirring, until sour cream is just warmed through, about 30 seconds. Do not boil or sauce may curdle. Sprinkle with dill before serving. Serve over egg noodles or mashed potatoes.