Flank steak is a great cut to grill or broil. Marinated or not, the flavor is great. A little bit of char on the outside just adds to the flavor! Cook only until rare/medium rare, then slice against the grain.
See our favorite recipe here http://www.twistedhornranch.net/meat-and-poultry.html
All of our beef is grass fed, grass finished and is dry aged 21 - 28 days for maximum flavor and tenderness.Note: Grass fed Longhorn beef is VERY lean and cooks 30 -40% faster. Please adjust recipe times accordingly and use a little olive oil on the meat when cooking