Heat a large skillet over medium heat, then add butter and beef. Brown the beef in the skillet for 8-10 minutes over medium heat.
Pour 2 cups of beef broth into the skillet, add seasoning, stir to combine, and bring it to a boil. Reduce heat, cover, and simmer for 20-30 minutes until the beef is tender. Be sure to add the last cup of beef broth slowly as it cooks off.
Mix cornstarch into 1/4 cup of cold water in a separate bowl, then stir this mixture into the skillet. Allow it to cook for 10 minutes or until the sauce thickens.
While the sauce thickens, prepare the egg noodles in a separate pot following the package instructions.
Serve the beef mixture over the egg noodles and enjoy your meal!