A Simple and Hearty Recipe — Beef Stroganoff
Ingredients 1.2 lb boneless rib eye 2 tbsp vegetable oil , divided 1 large onion, sliced 10 oz mushrooms, sliced 3 tbsp butter 2 tbsp flour 2 cups beef broth 1 tbsp Dijon mustard 2/3 cup sour cream Salt and pepper, to taste