How Long to Cook Flank Steak (Whole, 1.5–2 lb) in the sheet pan
Specification: Whole flank steak marinated and dried, broiled on foil-lined heavy rimmed baking sheet on top oven rack
3-Step Execution Protocol
Preheat oven to 500°F (260°C) Broil. Arrange flank steak (whole, 1.5–2 lb) (Whole flank steak marinated and dried, broiled on foil-lined heavy rimmed baking sheet on top oven rack) on a parchment-lined sheet pan in a single layer. Spray lightly with high-smoke-point oil.
Cook for 8–11 mins. Flip at the 5-minute mark for even browning.
Blistered charred crust on both sides with center yielding springy medium-rare resistance at 135°F Confirm internal temperature reaches 135°F (57°C) (medium-rare). Rest for 8 minutes before serving.
Beef Checkoff Broiling Guidelines & America's Test Kitchen Steak Compendium