600g beef fillet
1 onion, thinly sliced
250g button mushrooms, thinly sliced
1 tbsp Dijon mustard
400ml beef stock
1 tbsp vegetable oil
2 heaped tbsp soured cream or crème fraiche
1 tbsp (or more) brandy (optional)
squeeze of lemon (optional)
finely chopped parsley, to serve
flaked sea salt
freshly ground black pepper
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This is a fast version of stroganoff, using beef fillet and seasoned with mustard and brandy instead of paprika. It takes no time to cook and it’s wonderfully tender and delicious – makes an expensive cut of meat go a long way too. Serve with noodles if you like, or some chips go down a treat. If you prefer, you could use some well-trimmed sirloin instead of fillet.
First prepare the beef fillet. Cut it into slices ½–1 cm thick, then slice these into strips about 1cm wide. Season the meat with salt and pepper and set it aside for a few minutes.
Heat the butter in a large frying pan. Add the onion and sauté for 2 minutes, then add the mushrooms and continue to cook until both are soft. Stir the mustard into the pan, coating the onion and mushrooms thoroughly – we find it easier to add the mustard at this stage than to mix it into the stock. Pour the stock into the pan, then leave it to simmer until the liquid has reduced by about half. Stir in the crème fraiche and set the pan aside for a few minutes.
In another large frying pan, heat the vegetable oil. When it’s smoking hot, add the strips of beef. Fry, stirring continuously, until the meat is browned on all sides. This should take about a minute at the most. If you want to flambé the beef, put the brandy in a ladle and carefully heat it over a flame. When the alcohol starts to burn off (you will see the fumes), tip it very gently towards the flame and it will ignite. Immediately pour this over the beef and give it a quick stir. Stand well back when doing this and be very careful.
Reheat the onion and mushroom sauce, then add the beef. Check the seasoning and add more salt and pepper to taste. If you find the sauce too rich, add a squeeze of lemon. Sprinkle with parsley before serving.