Cut steak into small strips, approximately 1-1 ½ inches long. Chop the onion.

Brown the steak and onions in a skillet with the butter over medium heat. Once browned, add the cream of mushroom soup and sour cream, mix thoroughly.

Continue to cook over medium heat, until the mixture starts to simmer. Turn heat down to low, cover the skillet and continue simmering, for about 45 minutes, or until meat is tender, stirring occasionally.

While meat is simmering, cook the egg noodles according to manufacturer’s recommendation.

Once done, pour the meat and soup mixture over hot, buttered egg noodles. Enjoy!!