Smoky steak and mushroom stroganoff

Method

1. Heat the oil and butter in a non- stick frying pan over a high heat, add the mushrooms and cook until golden brown. Transfer to a plate, then add a glug more oil to the pan and cook the onion over a medium heat for about 10 minutes until softened and golden brown.
2. Meanwhile, season the steaks with salt and freshly ground pepper. Heat a griddle pan and, when smoking hot, sear the steaks for 3-4 minutes on each side, then set aside to rest before slicing into chunky slivers.
3.  Stir the paprika, tomato purée and browned mushrooms into the onions and cook for 1-2 minutes. Pour in the brandy or wine, bring up to the boil and bubble for a minute to reduce, then add the stock and bring back to the boil. Turn down the heat and simmer gently for 10 minutes. If you prefer your steak well done, add it now with the soured cream and simmer everything for 10 minutes more. If you like your beef rare, take the pan off the heat and stir in the soured cream and steak.
4. Squeeze over lemon juice, season generously, then scatter with the parsley, if using. Serve with rice and a dollop of mustard, if you like.