a 500g pack of all butter puff pastry (you can even use ready rolled if you want to make it even easier)
6 slices of Serrano ham and
Preheat the oven to 200C (fan oven).
Flour your worktop and roll out the pastry into a square about 5mm thick. Divide into 2 rectangles (if ready rolled just cut it in half).
Chop the mozzarella cheese into small pieces. Put down the right hand edge of each pastry rectangle. Dot pesto over the cheese and ham.
Roll the pastry over the cheese so that the centre of the pastry will be a cheesy core. Keep rolling over the ham to form a long sausage shape. Brush water along the edge to seal the pastry. Cut each roll into 2-3cm pieces.
Put the pastry rolls cut side up onto the baking trays. Leave a decent space between them as they will spread.
Brush with milk.
Bake for 30min until the pastries are golden.