Let's Get Cooking
- 1 Cut the steak into slices 1cm/0.5in thick, then cut each slice across the grain into strips 1cm/0.5in wide.
- 2 Take 1 tbsp of the oil and make a paste with the Knorr Stock Cube. Toss the beef in the paste to cover.
- 3 Heat half of the oil that’s left in a large frying pan, add the paprika and onion and cook slowly until the onion is soft and sweet, but not browned. Add the mushrooms and fry gently for 3 minutes. Transfer the mixture to a plate and keep warm.
- 4 Using the same pan you cooked the onion mixture in heat the rest of the oil until very hot.
- 5 Add the fillet steak and fry quickly, turning it as you do so, for just over 1 minute.
- 6 Return the onion mixture to the pan and pour in the sour cream. Bring to the boil and simmer for a minute or so, until thickened.
- 7 Stir in the lemon juice, add parsley, sprinkle with paprika and serve
