Place the carrots half an onion garlic celery and meat in a baking dish. Season with salt and pepper and add a glass of good aromatic white wine.Bake at 180 ° for about an hour then cover the pan with aluminium foil and bake again at 165 ° for 3 hours.Remove from the oven allow to cool and debone the meat. Remove the hard fatty parts and the garlic. Collect the vegetables which together with the meat will be used for the filling.Set aside the lamb bones which will be used for the sauce. minimal_rich_text

Pass the meat and vegetables in the food processor add the Grana Padano and an egg. Work until you get a fine and malleable dough. minimal_rich_text

Work all the ingredients until you get a smooth dough. Leave to rest for about 30 minutes in the refrigerator.Then cut into different parts and roll the dough into rectangular strips as thin as possible. Arrange the filling in the centre and cover with pastry. Close and seal with a ravioli pasta cutter. minimal_rich_text

Place the lamb bones on a baking sheet and brown at 200 degrees. When they are golden brown place the bones in a saucepan with about 3 litres of water along with the chopped vegetables.Cook for 5 - 6 hours over low heat. Degrease and skim from time to time.After the time has elapsed filter and keep the reduction. minimal_rich_text

Heat the butter in a pan with the sage until the sage leaves are golden. minimal_rich_text

Bring salted water to the boil cook the ravioli for 2 minutes then remove the ravioli from the water with a skimmer. minimal_rich_text

In a deep dish arrange a spoonful of Grana Padano a spoonful of lamb sauce and a spoonful of butter and sage.Place the freshly drained ravioli on top and again finish with the cheese the lamb sauce and the butter with the sage.Garnish with a fresh sage leaf. minimal_rich_text