How to cook
Clean the pork tenderloins of membranes and tendons. Make a cut down the middle of each but be careful not to cut them completely in 2. Tenderize the meat with a wooden mallet. Sprinkle on both sides with salt and black pepper.
Add the diced cheese and 1/2 the parsley. Season with salt and black pepper. Stir well. Put a little of the mixture in each of the prepared tenderloins. Roll each up into a spindle so that the outer side of the tenderloin remains on top. Stick toothpicks through the tenderloins to keep them whole, smear generously with butter and bake on a highly heated grill.