Steak with mushroom sauce - Legendary Recipes %

Ingredients

• 1 tsp rapeseed oil
• 2 lean rump or sirloin steaks, each weighing about 150g
• 1 red onion, chopped
• 1 clove garlic, crushed
• 200g mixed mushrooms, sliced, for example, flat cap, brown, oyster
• 1 heaped tsp flour
• 1 tbsp red wine (optional)
• 1 tsp Dijon mustard
• 150 ml beef stock