1Preheat oven to 180c fan. Rub a little oil on a baking tray. Add gnocchi, tomatoes, fennel, onion, 1 tbsp oil, salt and pepper to the tray and mix well.
2Rip sausages into pieces and add them to the tray. Pour 60ml of water into the tray.
3Roast for 25 minutes. Remove from oven, shake the pan. If dry, add more water and return to oven for 10-15 minutes until crispy.
4Meanwhile, chop basil, crush garlic and mix them with lemon juice, salt and the remaining olive oil.
5Drizzle basil mixture over the traybake and sprinkle pine nuts and Parmesan cheese over the top.