Beef Stroganoff with Mushrooms frozen 300g

SKU: REA-002

• butter, divided
• onion, chopped
• garlic, crushed
• 500 g sliced mushrooms
• 700 g lean beef fillet steaks, seasoned with salt and pepper 
• mustard
• paprika
• beef broth 
• flour
• Worcestershire sauce
• Salt and pepper