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.
Use a meat thermometer to test for doneness. Rare - 120 degrees F Medium Rare - 125 degrees F Medium - 130 degrees F When the steaks are crusty-charred and done to your liking, remove from the grill and let sit 15 minutes before serving (meat temperature will rise 5 to 10 degrees after it is removed from the oven).emove from heat and put the cast iron skillet with the steaks in it into the oven. Cook an additional 3 to 5 minutes, depending on thickness of steaks and degree of doneness you like. Using the Sear-Roasting technique, proceed to cook your steak to your desired internal temperature.