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.
Flat Iron Steak & Fries with Black Pepper Sauce
It’s the ultimate bistro classic, guaranteed to please. Succulent British grass-fed flat iron steak is drizzled in a luscious homemade black pepper sauce, enriched with cashew cream. Herby fries and garlicky green beans join on the side.
Prep in 10
High protein
Low sat fat
Serving size
Ingredients
- 4 flat iron steaks
- 1 tbsp aged balsamic vinegar (Sulphites) (Aged Balsamic Vinegar (Cooked Grape Must, Wine Vinegar), Xanthan Gum)
- 4 large potatoes
- 2 tsp dried oregano (Dried Rubbed Oregano 100%.)
- 240g green beans
- 110g baby plum tomatoes
- 1 beef stock cube (Celery) (sea salt, potato starch* , palm oil* , vegetables* 4.8% (onions* 4%, carrots* 0.5%, mushrooms* 0.3%), sugar*, natural flavour caramelised* , yeast extract, beef powder* 1.5%, beef* 1.2%, spices and herbs* (parsley* , black pepper* , rosemary*, garlic*, turmeric*, bay leaves*) * Organic ingredients)
- 200ml cashew cream (Nuts) (water, cashew (7%), sunflower oil, stabiliser (arabic gum, xanthan gum), sea salt)
- 2 garlic clove
Nutritional Information
Calories: 567
Protein: 42g
Carbs: 47g
Fat: 22g
Flat Iron Steak & Fries with Black Pepper Sauce
It’s the ultimate bistro classic, guaranteed to please. Succulent British grass-fed flat iron steak is drizzled in a luscious homemade black pepper sauce, enriched with cashew cream. Herby fries and garlicky green beans join on the side.
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Cooking Instructions
- Preheat the oven to 220C / fan 200C / gas mark 7. Cut the potatoes into fries. Place on a lined baking tray and toss with 2 tsp oil, oregano, a pinch of sea salt and black pepper. Roast for 25-30 mins, turning halfway, until soft and golden.
- Bring a saucepan filled with salted hot water to a boil. Trim the green beans, then add to the saucepan. Boil for 2-3 mins, until cooked, then drain and set aside. Meanwhile, finely chop or crush the garlic. Halve the tomatoes.
- Heat a large frying pan with 1 tbsp oil on high heat. Season the steaks with sea salt and cook (as a guide: 2-3 mins per side for medium-rare, or 4-5 mins per side for well-done). Transfer to plates and leave to rest.
- Make the black pepper sauce; reheat the green bean saucepan on medium heat. Add the cream, vinegar, a generous amount of black pepper and 50ml water. Crumble in the stock cube and stir. Simmer for 4 mins, until slightly thickened. Remove from the heat and keep warm.
- Reheat the steak pan with 2 tsp oil on medium-high heat. Add the garlic and tomatoes, cook for 1 min, then add the green beans. Cook for 1 min, until softened. Season with sea salt and black pepper.
- Serve the steaks, herby fries, tomatoes and green beans with the black pepper sauce.
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