We doubled the recipe..thinking I was going to have some left over for 2 of us. Was I wrong. These were fantastic and really easy. Note to self: you can make these ahead of time but tossing the zucchini into a bag and leaving until ready to dump on the cookie sheet.
Drizzle vegetable oil into an aluminum or cast-iron pan, and heat the pan on the stove until the oil just begins to smoke. Add your flank steak to the pan. Cook one steak at a time. Sear each side of the flank steak for 2 to 4 minutes. Use fork or tongs to turn the flank steak once. Test the flank steak with a meat thermometer for at least an internal temperature of 145 F right before you anticipate the cooking time for your steaks to end.
To prepare steak, sprinkle steak with 1/4 teaspoon salt and black pepper. Heat a cast-iron grill pan over high heat. Coat pan with cooking spray. Cook steak 4 minutes; turn and look for red beads forming on the surface to indicate the steak is approaching medium rare.Cook 4 minutes or until desired degree of doneness. Let rest 5 minutes.Cut steak diagonally across the grain into thin slices.oat pan with cooking spray. Cook steak 4 minutes; turn and look for red beads forming on the surface to indicate the steak is approaching medium rare. Cook 4 minutes or until desired degree of doneness. Let rest 5 minutes. Cut steak diagonally across the grain into thin slices.