Preheat the grill to hot.
Make the dressing by whisking all the ingredients together in a small bowl. Season to taste with salt and freshly ground black pepper. Set aside.
Plunge the Tenderstem into boiling water and blanch for 4-5 minutes until it is tender but with a little ‘bite’. Drain well and divide between individual heatproof dishes, or arrange in a large baking dish.
Lay the slices of prosciutto over the Tenderstem, ribboning and folding it a little so it looks pretty and a little rustic. Slide under the hot grill and cook for 2-3 minutes until the prosciutto starts to turn crispy.
Drizzle over the dressing and eat immediately, served with warm bread to soak up the juices.
For top tips on protecting you and your family when preparing raw meat and poultry, visit Food Safety in the Home and view the full Food safety at home video.