Preheat the oven to 220°C/Fan 200°C/ Gas 7. In a large roasting tin, toss the carrots and parsnips with 1 tablespoon oil and the honey. Season well and roast for 20 minutes.
In a small roasting tin, toss the cauliflower florets with another 1 tablespoon of oil and some seasoning, and roast for 15 minutes. Take the cauliflower out of the oven and sprinkle the cheese over the florets, then return to the oven for a further 5 mins
Meanwhile, heat the remaining 1 tablespoon of oil in a large frying pan. Season the steaks and fry for 2–3 minutes on each side, depending on how well you like your meat cooked. Remove the steaks from the pan to a board and leave to rest.
Scatter the Yorkshire pudding pieces on a baking tray and cook in the oven for 4–5 minutes until crispy.
In a small bowl, mix together the ingredients for the horseradish sauce with some seasoning and set aside. Thinly slice the steaks.
On a large platter, layer the rocket, roasted vegetables and beef. Top with the Yorkshire pudding croutons and serve warm with horseradish sauce.