Classic Beef Stroganoff - Traveling and Food

Ingredients

• 1 lb (450g) beef sirloin or tenderloin, thinly sliced into strips
• 1 tablespoon olive oil
• 1/2 cup onion, finely chopped
• 2 cloves garlic, minced
• 8 oz (225g) cremini or button mushrooms, sliced
• 1 tablespoon all-purpose flour
• 1 cup beef broth
• 1 tablespoon Dijon mustard
• 1/2 cup sour cream
• Salt and pepper to taste
• 2 tablespoons fresh parsley, chopped (optional, for garnish)
• Cooked egg noodles or rice, for serving