Simmer the pears and onions
Bring the water and rosemary to the boil in a frying pan, season with salt. Add the pears and onions, cover and poach for approx. 10 mins. Remove the pears and onions, drain. Add the balsamic and oil to the remainder of the liquid, season. Pour the sauce into a bowl.
Heat the oil in the same pan. Fry the halloumi for approx. 2 mins. on each side, remove and set aside. Return the pears and onions to the pan, fry for approx. 4 mins. Return the halloumi to the pan, add the honey, caramelize for approx. 1 min. Plate up the radicchio, pears, halloumi and onions, drizzle with the sauce.