Put the vegetables without defrosting in a hot coated pan and fry them for about 4 minutes at high heat, then continue frying at medium heat for about 5 minutes. In the meantime bring 1/2 litre of water to the boil. Remove the pan from the heat and let it cool down for 1 minute. Stir in the puree flakes. Heat oil in a pan.
Fry the smoked pork on each side for about 3 minutes. Grease an ovenproof dish. Add the vegetables, purée and pork loin. Sprinkle cheese on top. Bake in a preheated oven (electric cooker: 200 °C/ circulating air: 175 °C/ gas: level 3) for approx. 5 minutes until the cheese has melted