Preheat oven to 350 degrees F. Line a baking sheet with non-stick parchment.
Prepare flank steak by either pounding down with a meat mallet until it’s approximately 1/2 inch or butterflying as per video.
Spread stuffing evenly over prepared steak and roll up, jelly-roll style, from the long end. Tie in about 3 places, evenly spaced, to hold roll together.
Transfer steak to prepared baking sheet and bake for 30-50 minutes, depending on the amount of doneness you desire. The longer bake time will produce meat that is “medium”. I wouldn’t recommend well done for this recipe as the meat will likely begin to get tough. For more accurate results, it’s best to use a meat thermometer.