Learning how to cook flap steak in oven is a fantastic way to prepare this flavorful and affordable cut. Flap steak benefits from a hot oven finish after searing, cooking quickly to maintain its characteristic beefy flavor. This method gives you excellent control, ensuring a perfect medium-rare doneness with a beautiful crust.
This guide will walk you through the entire process, from selecting your steak to serving it. You’ll get clear, step-by-step instructions for a reliably delicious result every time.
How To Cook Flap Steak In Oven
This primary method uses a two-step technique: searing on the stove and finishing in the oven. It is the best approach for even cooking and a restaurant-quality crust. Before you start, ensure your steak is thawed if frozen and pat it completely dry with paper towels.
Essential Ingredients And Tools
You only need a few simple items to begin. Having everything ready before you start cooking is key for the best outcome.
- 1 to 1.5 pounds of flap steak (also known as sirloin tip or bavette)
- High-heat cooking oil (avocado, grapeseed, or canola oil work well)
- Kosher salt and freshly ground black pepper
- An oven-safe heavy skillet (cast iron or stainless steel is ideal)
- Tongs
- Instant-read meat thermometer
- Aluminum foil for resting
Step-By-Step Cooking Instructions
Follow these numbered steps for a perfectly cooked flap steak. The total active cooking time is usually under 15 minutes.
- Preheat your oven to 400°F (200°C). Place your oven-safe skillet on the stove over medium-high heat to preheat as well.
- While the oven and skillet heat, season the steak generously on all sides with salt and pepper. Drizzle a small amount of oil on the steak and rub it in.
- Once the skillet is very hot (a drop of water should sizzle and evaporate instantly), carefully add the steak. It should sizzle loudly upon contact.
- Sear the steak without moving it for 2-3 minutes, until a deep brown crust forms. Use your tongs to flip it and sear the other side for another 2-3 minutes.
- Immediately transfer the entire skillet to the preheated oven. Cook for 4-8 minutes, depending on thickness and your desired doneness.
- Check the internal temperature with an instant-read thermometer. Remove the steak from the oven when it is 5°F below your target temperature.
- Transfer the steak to a plate or cutting board and tent it loosely with foil. Let it rest for at least 5-10 minutes before slicing.
Checking For Doneness And Resting
Using a thermometer is the only reliable way to check doneness. Visual cues can be misleading, especially with a seared crust.
- Rare: 120-125°F (remove from oven at 115°F)
- Medium-Rare: 130-135°F (remove from oven at 125°F)
- Medium: 140-145°F (remove from oven at 135°F)
- Medium-Well: 150-155°F (remove from oven at 145°F)
Resting is non-negotiable. It allows the juices, which have been driven to the center by the heat, to redistribute throughout the meat. If you slice it immediately, those precious juices will end up on your cutting board instead of in your steak. The internal temperature will also rise by about 5 degrees during this time, which is why you remove it early.
Preparing And Seasoning Your Flap Steak
Proper preparation makes a significant difference in your final dish. Taking a few extra minutes here will enhance both texture and flavor.
Selecting A High-Quality Flap Steak
Look for steak with a bright, cherry-red color and fine, consistent marbling (thin white streaks of fat). The cut should be about 3/4 to 1 inch thick for best results in the oven. Thinner steaks will cook very quickly and are better suited for a grill or pan-searing alone. If you see a steak labeled “bavette” or “sirloin tip,” it is the same cut.
Simple And Effective Seasoning Blends
While salt and pepper are classic, you can easily create other dry rubs. The key is to apply the seasoning at least 40 minutes before cooking, or just before, for the best crust.
- Classic Steakhouse: Kosher salt, black pepper, and granulated garlic.
- Southwestern: Salt, chili powder, cumin, smoked paprika, and a touch of oregano.
- Herb-Crusted: Salt, pepper, dried rosemary, and crushed thyme.
For a simple marinade, combine olive oil, soy sauce, minced garlic, and a splash of acid like lime juice or red wine vinegar. Marinate the steak for 2-4 hours in the refrigerator, but not much longer as the acid can begin to break down the meat’s texture.
Expert Tips For The Best Results
These practical tips address common questions and pitfalls. They will help you refine your technique and troubleshoot any issues.
Avoiding Common Mistakes
Even small errors can affect your steak. Here’s what to watch out for.
- Not Preheating the Skillet: A properly preheated skillet is essential for a good sear. A cold skillet will steam the meat.
- Overcrowding the Pan: If cooking multiple steaks, use a large skillet or cook in batches. Crowding lowers the pan temperature.
- Skipping the Rest: We mentioned it before, but it’s worth repeating. Do not skip the resting period.
- Using a Thin Pan: A flimsy pan won’t retain heat well for the oven finish. A heavy cast-iron or tri-ply stainless skillet is best.
Slicing And Serving Suggestions
Flap steak has a distinct grain, which is the direction the muscle fibers run. Always slice the cooked steak thinly against the grain. This cuts the long fibers short, making each piece much more tender and easier to chew. To find the grain, look for the lines running along the length of the steak; slice perpendicular to those lines.
Serve your sliced steak immediately. It pairs wonderfully with simple sides that complement its rich flavor without overpowering it.
- Roasted vegetables (asparagus, broccoli, or potatoes)
- A crisp green salad with a vinaigrette
- Mashed potatoes or cauliflower puree
- Corn on the cob or a hearty grain salad
Frequently Asked Questions
Here are answers to some common questions about cooking flap steak in the oven.
Can I Cook Flap Steak In The Oven Without Searing First?
You can, but you will not develop the flavorful Maillard reaction crust that defines a great steak. For a similar result without stovetop searing, you can use your oven’s broiler function. Place the steak on a broiler pan close to the element to char the surface, then lower the rack and reduce the temperature to finish cooking. The results can be good, but the two-step method is generally superior.
What Is The Best Temperature For Cooking Flap Steak?
A high oven temperature, between 400°F and 425°F, is ideal. This allows the steak to finish cooking quickly after searing, preventing it from becoming overcooked and tough. The high heat also helps continue the crusting process. Cooking at to low of a temperature will result in gray, steamed meat without a good exterior.
How Long Should I Cook Flap Steak In The Oven?
After searing, the oven time is relatively short. For a 1-inch thick steak, expect 4-6 minutes for medium-rare. The only accurate way to know is to use a meat thermometer. Always base your timing on internal temperature, not minutes alone, as steak thickness and oven variability play huge roles.
What Are Good Sauces To Serve With Flap Steak?
A simple pan sauce made in the skillet after removing the steak is excellent. Deglaze the pan with red wine or beef broth, add a pat of butter and perhaps some herbs, and simmer until slightly thickened. Chimichurri, a vibrant Argentinian herb sauce, is also a classic and perfect pairing for flap steak’s beefy flavor. A compound butter with garlic and parsley melting over the hot slices is another easy option.
How Do I Store And Reheat Leftover Flap Steak?
Store leftover steak in an airtight container in the refrigerator for up to 3 days. To reheat, avoid the microwave, which will make it tough. Instead, place the slices in a skillet over low heat with a tablespoon of broth or water, covered, until just warmed through. You can also enjoy it cold in salads or sandwiches, where it’s texture and flavor still hold up very well.