Beef tenderloin steaks are often considered a special-occasion cut, but when they go on sale (or you’re ready for a splurge), this classic preparation is foolproof. Use a timer rather than turning, prodding, or overcooking the steaks, and set the timer again while they rest so you don’t slice too soon. You could also use two (8-ounce) strip steaks, or 1 (1-pound) flank steak. Balsamic glaze has been reduced until syrupy. Look for it in the vinegar aisle to save time, or simmer 1 cup balsamic vinegar in a saucepan until reduced by half, about 20 minutes.