Step 1

Preheat oven to 210C/190C fan forced. Place potato in a heatproof bowl. Microwave on High, covered, for 5 minutes or until just tender. Drain off excess liquid.

Step 2

Whisk together the lemon juice, garlic, mustard and 1 1/2 tbs of the oil in a bowl. Place the mushrooms and potato in a large roasting pan. Sprinkle with the shallot and thyme. Drizzle with lemon mixture and season. Roast for 15-17 minutes or until just tender.

Step 3

Meanwhile, heat the remaining oil in a frying pan over medium-high heat. Season the pork. Cook, turning, for 2 minutes or until browned.

Step 4

Add pork to roasting pan and sprinkle with parmesan. Roast for 10 minutes or until pork is just cooked through. Rest for 3 minutes. Serve with extra thyme.