Peel and finely dice the onion and garlic. Heat the oil in a large pot and fry the onion and garlic for about 4 minutes. In the meantime wash and clean the spinach, shake dry and add to the onion. Let it collapse in a closed pot. Season to taste with salt and a little nutmeg. Put into a sieve and drain well
Wash the basil, shake dry and chop coarsely, except for something to garnish. Rip cheese as finely as possible. Unroll pizza dough, remove baking paper. Spread spinach, tomatoes and half of the cheese on the dough. Sprinkle with pine nuts and basil. Roll up the dough and place it on a baking tray lined with baking paper. Spread the remaining cheese on the roll
Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for approx. 20 minutes. Remove the roll from the oven, let it cool down for about 15 minutes and cut into slices. Garnish with basil