Steak Stroganoff: Leftover Steak's Delicious Second Act

Ingredients

• 1 tablespoon olive oil (15 ml)
• 1 pound cremini mushrooms, sliced (450g)
• 1 medium yellow onion, chopped (150g)
• 2 cloves garlic, minced (6g)
• 1/4 cup all-purpose flour (30g)
• 2 cups beef broth (475 ml)
• 1/2 cup dry sherry (120 ml)
• 1 tablespoon Dijon mustard (15ml)
• 1 teaspoon Worcestershire sauce (5ml)
• Salt and freshly ground black pepper to taste
• 1 pound leftover steak, thinly sliced against the grain (450g)
• 1 cup sour cream (240ml)
• 2 tablespoons chopped fresh parsley, for garnish (optional) (3g)
• 1 pound egg noodles, cooked according to package directions (450g)
• 1 tbsp butter for sauteing (optional)