Preheat oven (electric cooker: 200 °C/circulating air: 180 °C/gas: see manufacturer). Line baking tray with baking paper.
Wash the rosemary and shake dry. Peel the parsnips if necessary. Wash parsnips and pears and cut into quarters lengthwise. Core the pears. Mix everything in a large bowl with honey, oil, salt and pepper. Spread it on the baking tray.
Bake in a hot oven for about 30 minutes. Pluck the ham into pieces, spread on top and continue roasting for about 5 minutes until the ham is crispy.
The oven vegetables taste great as a main course, e.g. with mashed potatoes or bread and dips like sour cream or hummus. As a side dish, prepare only half the amount and serve with poultry, steaks, chops or fish fillets.