Rump Steak with Creamy Truffle Leek & Mushrooms

Rump Steak with Creamy Truffle Leek & Mushrooms

You'll love our dry-aged British rump steak, enticingly tender and flavour-rich. Here we slice it and serve with a creamy leek, mushroom and kale sauce, infused with aromatic truffle. Just the thing for a weekend treat.

Ready in 20 High protein 4 of 5 a day

Serving size

Cook time: 20 mins
Cuisine: British
Food group: Beef

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Cooking Instructions

The protein cooking time listed in this recipe has been updated.

As of December 2025, we’ve revised cooking times for all our proteins to reflect improved food safety guidance.

Check out the latest recommended times in our Cooking Guidelines.

  1. Boil a kettle. Peel and roughly dice the sweet potato into 2cm cubes. Place into a saucepan with half the stock cube and cover with boiling water. Simmer for 12-13 mins, until soft, then drain. Return to the pan and mash with a pinch of sea salt.
  2. Thinly slice the mushrooms. Finely chop or crush the garlic. Trim and thinly slice the leek into 1cm rounds. Heat a large frying pan with 1 tsp oil on medium heat. Add the leek, mushrooms, spinach, garlic and dried herbs (to taste) to the pan. Cook for 5 mins, until softening.
  3. Heat another medium frying pan with 1 tsp oil on medium-high heat. Season the steaks with sea salt and black pepper. Add the steaks and cook (as a guideline: 2-3 mins on each side for medium-rare, or 4-5 mins for well-done). Leave to rest then slice against the grain.
  4. Crumble the remaining stock cube into the leek mixture. Add the truffle oil and 50ml hot water (25ml for 1 person) and cook on medium-high heat for another 2 mins. Stir in half the yoghurt and season with sea salt and black pepper.
  5. Serve the steaks over the mash with the truffle, leek and mushroom sauce.

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