Pound steak very thin. Depending upon the size of steak, you may get more steak slices. You may stuff two large pieces and then you will roll lengthwise and cut into pieces.
If you are using prosciutto, lay a piece across the steak before filling.
Chop parsley, mince garlic, grate pecorino or parmesan cheese together along with pepperoni.
Add this mixture to center of each piece.
If you want to add a little heat, add a pinch of red pepper flakes.
Roll up from short side to long. You might also roll lengthwise as stated above, depending on what is easier.
Tie with string. If rolling lengthwise in large piece, cut Into pieces before tying. You will will get 6 to 8 pieces.
Fry in large frying pan, browning all sides.
I prefer to make my sauce separately and add braciole to pot.