Heat oil in a saucepan, add the sausage meat and break with a wooden spoon while browning well and stirring frequently. Add leek and garlic and cook for a further 2 minutes. Stir in wine and cook until evaporated.
Add Providore Series sauce, bring to the boil and simmer uncovered for 5 minutes. Remove from heat and add spinach leaves. Season to taste.
Dip each lasagne sheet into hot water to soften. Cut each sheet into thirds lengthwise using a sharp knife. Spread each strip with 2-3 tablespoons meat sauce. Roll up into a scroll shape.
Arrange pasta scrolls cut side up, in a lightly greased 1.5 litre capacity oval baking dish. Pour over hot water and cover with foil. Bake in a preheated oven at 180°C for 20 minutes. Remove foil and sprinkle with cheese. Cook for a further 15-20 minutes or until cheese is melted and golden. Serve immediately.
Use your favourite continental style sausage when making this rotolo.