Preheat the oven to 180°C, fan-forced. Finely chop the onion. Peel and mince the garlic. Finely grate the parmesan and mozzarella. Roughly chop the courgette, then place it in a tea towel and squeeze out the excess water. Roughly chop the spinach.
COOK VEGGIES
Heat oil in a medium-deep frypan on medium heat. Add garlic and onion and cook for 1 min, then add the courgette and spinach. Cook 3-4 mins, until onion and courgette are tender and spinach wilted. Set aside to cool slightly.
MAKE FILLING
In a large bowl combine the garlic, onion, courgette, spinach, ricotta cheese, parmesan cheese, egg, Italian herbs and nutmeg and season with salt and pepper.
MAKE ROLOTOS
Lightly spray a shallow ovenproof dish with oil. Pour in a small amount of the passata (enough to cover the bottom of the dish) and evenly spread out. Lay the lasagne sheets lengthwise on the bench and brush all over with water. Working quickly, spoon the filling evenly over the lasagne sheets to the edges. Cut the filled sheets into 4 strips, then carefully roll up each filled strip.
BAKE ROTOLOS
Then put the pasta rolls, cut side up, in the dish. Pour over the remaining passata sauce. Sprinkle with the mozzarella, then cover with foil or a lid. Bake for 20 mins. Uncover and bake for a further 15 mins, or until the pasta is tender and the cheese is melted.
TO SERVE
Divide the spinach & ricotta Rotolo pasta bake between plates.