Put the milk in a bowl and while mixing gradually add the flour until it's smooth. Add the eggs one by one and bring to taste with salt.
Bake the crespelle in a non stick skillet. You should be able to get 16 out of it according to the recipe but I got only about 10 and they weren't big or thick, so not sure how that compares...
Take a small saucepan and saute the garlic, parsley and tomatoes. Reduce the liquid of the tomato and cook for about 15 minutes.
In a baking tin of about 22 cm/8.6 inch wide (buttered slightly) put the largest crepe you made on the bottom and lightly spread with tomato sauce, sprinkle with Parmesan, shredded prosciutto and mozzarella and repeat this 8 times. Make sure you have enough tomato sauce left for the top crepe. Sprinkle with Parmesan on top and place in a preheated oven (200˚C/400˚F) for 20 minutes.