BBQ fillet steak with grilled mushrooms and peppercorn sauce

Preparation time
less than 30 mins

Cooking time
30 mins to 1 hour


  • 300g/10½oz floury potatoes, cut into large chunks
  • 2 x 150–200g/5–7½oz beef fillet steaks
  • 2 Portobello mushrooms
  • 50ml/2fl oz Madeira
  • 40g/1½oz butter, cut into cubes
  • 2 fresh thyme sprigs
  • 350ml/12fl oz double cream
  • 100ml/3½fl oz olive oil
  • 1 bay leaf
  • 2 garlic cloves, 1 whole and 1 thinly sliced
  • 200g/7oz wild mushrooms
  • 2 tsp finely chopped fresh parsley
  • 100ml/3½fl oz Worcestershire sauce
  • 2 tbsp green peppercorns, crushed
  • salt and freshly ground black pepper