Mix the flour with milk, egg and a pinch of salt until smooth and let the dough rest for 30 minutes.
Cut both types of tomatoes, olives, onions and asparagus into pieces and fry them in a little butter for about 8 minutes, season with salt, pepper and chilli.
Fry the rocket and sage in a second pan in a little butter for 1 minute, then pour the crepe batter over it, reduce the heat a little, turn the crepe after 5 minutes and bake for another 5 minutes.
Put the crepe on a plate, fill with the vegetables, spread the chopped mozzarella on top, close the crepe and enjoy!