Ask your butcher to butterfly a flank steak if it's a thick cut. You want to end up with a piece of meat that is about 1/8th inch thick.
Lay meat out and pound out until 1/8th inch thick.
Sprinkle with bread crumbs, parmesan cheese, garlic and pine nuts.
Roll meat up, taking time to make it a tight roll.
Using kitchen twine, tie up roll, spacing ties about every 4 inches.
Slice rolled meat into 2 inch pieces. Making sure each slice has one length of twine holding it together.
Gently add sliced Braciole into tomato sauce.
Allow Braciole to simmer in the sauce...up to 4 hours or so. It will get very tender.