Flank steak, known for its rich flavor and lean texture, becomes incredibly tender and flavorful when cooked in a cast iron skillet. This method provides a beautiful sear, locking in juices and creating a delicious crust. Whether you prefer a rare, medium-rare, or medium steak, this guide will walk you through the process, ensuring a mouthwatering meal every time.
How to Prepare the Flank Steak
Before you even think about the cast iron, proper preparation is key to a perfectly cooked flank steak. This involves:
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Choosing the Right Cut: Look for a flank steak that's bright red with good marbling. Avoid steaks that are overly dry or have discoloration.
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Trimming Excess Fat: Trim away any excess fat, but don't remove all of it. A little fat adds flavor and helps prevent the steak from drying out.
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Marinating (Optional): Marinating your flank steak for several hours or overnight enhances its flavor. A simple marinade of olive oil, soy sauce, garlic, and pepper works wonders. Experiment with different herbs and spices to create your own signature marinade.
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Patting Dry: Before searing, pat the steak completely dry with paper towels. This crucial step ensures a good sear.
Cooking Flank Steak in Cast Iron: Step-by-Step
Here's how to cook flank steak in a cast iron skillet to achieve optimal results:
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Preheat the Skillet: Place your cast iron skillet over medium-high heat. Let it heat up thoroughly – this is essential for a good sear. Add a high-smoke-point oil like canola or avocado oil.
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Sear the Steak: Once the oil is shimmering, carefully place the flank steak in the hot skillet. Sear for 2-3 minutes per side, undisturbed, until a deep brown crust forms. This step creates the Maillard reaction, responsible for the rich flavor.
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Reduce Heat and Continue Cooking: After searing, reduce the heat to medium. Continue cooking the steak to your desired doneness, using a meat thermometer for accuracy.
- Rare: 125-130°F (52-54°C)
- Medium-Rare: 130-135°F (54-57°C)
- Medium: 135-140°F (57-60°C)
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Rest the Steak: Once cooked, remove the steak from the skillet and let it rest on a cutting board for at least 10-15 minutes, loosely tented with foil. This allows the juices to redistribute, resulting in a more tender steak.
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Slice and Serve: Slice the flank steak thinly, against the grain. This makes it easier to chew and improves its texture.
What Temperature Should I Cook Flank Steak to?
The ideal temperature for cooking flank steak depends on your preference:
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Rare: A rare flank steak will have a deep red center and be very tender.
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Medium-Rare: This is a popular choice, offering a balance of tenderness and flavor. The center will be pinkish-red.
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Medium: A medium flank steak will have a slightly pink center.
Remember to always use a meat thermometer to ensure accuracy and avoid overcooking.
How Long Should I Cook Flank Steak in a Cast Iron Skillet?
The cooking time for flank steak in a cast iron skillet varies depending on its thickness and desired doneness. A general guideline is 2-3 minutes per side for searing, followed by 4-6 minutes per side for medium-rare. However, using a meat thermometer is the most reliable way to determine doneness.
Can I Cook Flank Steak in Cast Iron Without Oil?
While you can technically cook flank steak in a cast iron skillet without oil, it's not recommended. Oil helps to prevent sticking and promotes a nice sear, enhancing both the flavor and texture of the steak.
Tips for the Best Cast Iron Flank Steak
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Don't overcrowd the pan: Overcrowding will lower the temperature of the pan and prevent proper searing. Cook in batches if necessary.
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Use high-quality cast iron: A well-seasoned cast iron skillet will ensure even heating and prevent sticking.
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Let the steak rest: Allowing the steak to rest is crucial for retaining its juiciness.
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Experiment with different seasonings: Don't be afraid to experiment with different herbs, spices, and marinades to find your perfect flavor combination.
By following these steps and tips, you'll be well on your way to creating a delicious and perfectly cooked flank steak in your cast iron skillet. Enjoy!
