Flank steak, a flavorful and relatively inexpensive cut, transforms into a culinary masterpiece when cooked correctly. Cast iron, with its exceptional heat retention and even cooking, is the perfect vessel to achieve that perfect sear and juicy interior. This guide will walk you through the process, answering common questions and providing tips for achieving flank steak perfection.
What's the Best Way to Cook Flank Steak in Cast Iron?
The key to a perfectly cooked flank steak in cast iron lies in a combination of high heat searing and careful temperature control. We'll break it down step-by-step:
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Prep the Steak: Pat your flank steak dry with paper towels. This crucial step helps achieve a good sear. Season generously with salt, pepper, and any other desired spices (garlic powder, onion powder, paprika are all excellent choices). Let it sit at room temperature for at least 30 minutes to allow it to come to equilibrium.
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Preheat the Pan: Place your cast iron skillet over high heat. Let it get screaming hot – you should see a faint haze forming. Add a high-smoke-point oil, such as canola or grapeseed oil (about 1-2 tablespoons).
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Sear the Steak: Once the oil is shimmering, carefully place the steak in the hot pan. Do not overcrowd the pan. Sear for 2-3 minutes per side, undisturbed, to develop a beautiful crust.
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Reduce Heat & Continue Cooking: After searing, reduce the heat to medium-high. Continue cooking for another 3-5 minutes per side for medium-rare, adjusting cooking time based on your desired doneness. Use a meat thermometer to ensure accuracy. A food thermometer inserted into the thickest part of the steak should read:
- Rare: 125-130°F (52-54°C)
- Medium-Rare: 130-135°F (54-57°C)
- Medium: 135-140°F (57-60°C)
- Medium-Well: 140-145°F (60-63°C)
- Well-Done: 145°F+ (63°C+)
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Rest & Slice: Once cooked to your liking, remove the steak from the pan and let it rest on a cutting board, loosely tented with foil, for at least 10 minutes. This allows the juices to redistribute, resulting in a more tender and flavorful steak. Slice against the grain into thin strips before serving.
How Long Should You Cook Flank Steak in a Cast Iron Skillet?
The cooking time for flank steak in a cast iron skillet depends on the thickness of the steak and your desired level of doneness. As mentioned above, a meat thermometer is your best friend. However, a general guideline is 8-12 minutes total, including searing, for medium-rare.
What Temperature Should Flank Steak Be Cooked To?
The ideal internal temperature for flank steak is highly dependent on personal preference. However, most people prefer it medium-rare (130-135°F or 54-57°C) to medium (135-140°F or 57-60°C) for maximum tenderness. Cooking it beyond medium will make it tough.
How Do You Keep Flank Steak Tender?
The key to keeping flank steak tender is to slice it against the grain after it has rested. Flank steak's muscle fibers run in one direction, and slicing against them breaks them down, resulting in a much more tender bite. The resting period is also crucial; it allows the juices to redistribute throughout the meat.
Can You Marinate Flank Steak Before Cooking It in Cast Iron?
Yes! Marinating flank steak before cooking it in a cast iron skillet is highly recommended. A marinade will add extra flavor and help tenderize the meat. Consider using a marinade with acidic ingredients like citrus juice or vinegar, which helps break down the tough muscle fibers.
What to Serve with Cast Iron Flank Steak?
Your perfectly seared and tender flank steak deserves equally delicious accompaniments. Consider serving it with:
- Grilled or roasted vegetables: Asparagus, bell peppers, zucchini, and onions all pair well.
- A vibrant salad: A simple green salad with a light vinaigrette cuts through the richness of the steak.
- Roasted potatoes: Crispy roasted potatoes provide a hearty side dish.
- ** chimichurri sauce:** A classic Argentinian sauce that perfectly complements the flavor of flank steak.
By following these steps and tips, you'll consistently cook delicious and tender flank steak in your cast iron skillet. Happy cooking!
