ready in 33 min.
Preheat the oven to 180°C (160°C in a fan oven), 350°F, gas 4 and butter a casserole dish.
Cook the cauliflower in boiling salted water for 6-8 minutes, retaining a slight bite. Meanwhile mix the butter with the parmesan and breadcrumbs and season with salt and ground black pepper.
Put the well-drained cauliflower in the casserole dish. Scatter the topping over and bake in the oven for around 10 minutes until golden brown.