BBC Food - Recipes - Chargrilled fillet steak with smoked chilli butter, girolle mushrooms and purpl

Ingredients

• 4 x 150g/6oz fillet steaks
• 1 tbsp olive oil
• salt
• freshly ground black pepper
• 225g/8oz unsalted butter , at room temperature
• 2 tbsp lemon juice
• 2 tbsp each chopped fresh parsley, rosemary and thyme
• 2 canned anchovies, drained and finely chopped
• 1 tbsp finely chopped shallot
• 4 tbsp ready-made smoked barbecue sauce
• 2 smoked chipotle chillies (available at some supermarkets and from online suppliers), or fresh chillies, sliced
• ½ tsp salt
• ¼ tsp ground white pepper
• 60g/2½oz butter
• 400g/14oz small potatoes, boiled until tender, peeled and halved lengthways
• 1 tbsp chopped fresh flatleaf parsley
• 200g/7oz girolle mushrooms , trimmed and sliced
• 200g/7oz purple sprouting broccoli , blanched