If you’re wondering how long to cook 1 5 inch steak in oven, you’ve come to the right place. A steak that thick needs a special approach, and the oven is your best friend for getting it perfectly cooked from edge to center without burning the outside.
This guide will walk you through the simple, reliable method used by chefs: starting with a sear and finishing in the oven’s steady heat. You’ll get a steak that’s juicy, evenly cooked, and impressive every single time.
How Long To Cook 1 5 Inch Steak In Oven
The total time for a 1.5-inch steak in the oven is about 10 to 20 minutes after searing, depending on your desired doneness. But time alone isn’t the best guide. The most accurate way is to use a meat thermometer. Here’s a quick reference for the finishing temperature after you sear it:
- Rare: 120-125°F (about 5-8 minutes in oven)
- Medium Rare: 130-135°F (about 8-12 minutes in oven)
- Medium: 140-145°F (about 12-15 minutes in oven)
- Medium Well: 150-155°F (about 15-18 minutes in oven)
Remember, the steak’s temperature will rise about 5 degrees after you take it out (this is called carryover cooking). So you should remove it from the oven just before it hits your target temp.
Why the Oven Method Works for Thick Steaks
For a thin steak, a hot pan alone is fine. But a 1.5-inch steak is a different story. If you tried to cook it only in a pan, the outside would become overdone and tough long before the inside was ready. The oven provides gentle, surrounding heat that cooks the steak evenly all the way through.
This two-step process—sear then bake—gives you the best of both worlds. You get a flavorful, crispy crust from the sear and a perfectly graduated doneness inside thanks to the oven. It’s the surest path to a great thick steak.
Essential Tools You’ll Need
You don’t need fancy equipment, but a few key tools make the process foolproof.
- A heavy, oven-safe skillet: Cast iron is ideal because it holds heat beautifully and can go from stove to oven safely.
- Meat thermometer: This is non-negotiable for accuracy. An instant-read digital thermometer is a great investment.
- Tongs: For handling the steak without piercing it and losing juices.
- Wire rack and baking sheet (optional but helpful): If you don’t have an oven-safe skillet, you can sear in any pan and transfer the steak to a rack set on a baking sheet for the oven step.
Choosing the Right Cut of Steak
This method works wonderfully for any thick, good-quality steak. Some of the best cuts for a 1.5-inch thickness include:
- Ribeye: Richly marbled, very flavorful, and stays tender.
- New York Strip: A bit leaner than ribeye but with excellent beefy flavor and a firm texture.
- Filet Mignon/Tenderloin: The most tender cut, though it has less fat. It benefits greatly from this gentle cooking method.
- Porterhouse/T-Bone: Gives you two experiences in one—the strip and the tenderloin.
Step-by-Step Cooking Instructions
Follow these steps closely for a perfect result. Let’s assume you’re using a cast iron skillet.
Step 1: Prepare the Steak
Take the steak out of the refrigerator at least 30 to 45 minutes before cooking. Letting it come closer to room temperature is crucial for even cooking. If you cook it stone-cold, the outside will be overdone before the center warms up.
Pat the steak very dry with paper towels. Moisture is the enemy of a good sear; it creates steam instead of browning. Then, generously season all sides with kosher salt and freshly ground black pepper. You can add other dry seasonings like garlic powder at this stage too.
Step 2: Preheat Oven and Pan
Preheat your oven to 400°F. While it heats, place your dry cast iron skillet on a stove burner over medium-high heat. Let the skillet get hot for a good 5 minutes. You want it very hot before the steak touches it.
Step 3: Sear the Steak
Add a high-smoke-point oil (like canola, avocado, or grapeseed) to the hot pan. Carefully place the seasoned steak in the center. It should sizzle loudly.
Do not move it! Let it sear undisturbed for 2 to 3 minutes, until a deep brown crust forms. Use your tongs to flip it and sear the other side for another 2 to 3 minutes. If your steak has a fat cap, you can sear that edge too for about 30 seconds per side.
Step 4: Transfer to the Oven
If you added aromatics like thyme or garlic to the pan, you can place them on top of the steak now. Immediately move the entire skillet from the stove into your preheated oven. If you’re not using an oven-safe pan, transfer the seared steak to a wire rack set on a baking sheet.
Step 5: Cook to Your Desired Doneness
This is where your thermometer is essential. For a 1.5-inch steak, start checking the internal temperature after about 5 minutes in the oven. Insert the thermometer into the thickest part of the steak, sideways into the center.
Refer to the temperature guide above. Remove the steak from the oven when it’s about 5 degrees below your final target temperature. For example, for medium-rare (final target 130-135°F), take it out at 125-130°F.
Step 6: Rest the Steak
This step is just as important as the cooking. Transfer the steak to a cutting board or a warm plate. Loosely tent it with a piece of aluminum foil. Let it rest for a full 10 minutes.
Resting allows the juices, which have been driven to the center by the heat, to redistribute evenly throughout the meat. If you cut it immediately, all those flavorful juices will run out onto the board. After resting, slice against the grain and serve.
Common Mistakes to Avoid
Even small errors can affect your steak. Here’s what to watch out for.
- Not drying the steak: A wet surface prevents proper browning. Always pat it dry.
- Moving the steak too soon in the pan: Let the sear develop. It will release from the pan naturally when it’s ready.
- Using a cold pan: The pan must be hot to create an instant sear.
- Skipping the rest: Please, let it rest. Those 10 minutes make a huge difference in juiciness.
- Checking temperature too often: Every time you open the oven door, heat escapes. Rely on a quick thermometer check near the end of the estimated time.
Tips for Extra Flavor
Once you’ve mastered the basic method, you can add simple touches to make it even better.
- Butter baste: After flipping the steak in the pan, add a couple tablespoons of butter, some garlic cloves, and fresh herbs like rosemary. Tilt the pan and spoon the bubbling butter continuously over the steak for the last minute of searing before it goes in the oven.
- Dry brine: For even deeper seasoning, salt the steak heavily and leave it uncovered on a rack in the fridge for 4-24 hours before cooking. This draws out moisture, which then dissolves the salt and gets reabsorbed, seasoning the meat deeply and improving the crust.
- Finish with flaky salt: Sprinkle a pinch of flaky sea salt over the sliced steak just before serving for a nice texture and flavor boost.
FAQ Section
How long does a 1.5 inch steak take in the oven at 400?
After searing, it typically takes 10-20 minutes at 400°F, depending on doneness. Always use a meat thermometer for the best results.
Can I cook a thick steak in the oven without searing first?
You can, but you won’t get the same flavorful crust. The sear (the Maillard reaction) creates complex tastes that the oven alone can’t replicate. For the best steak, sear first.
What’s the best temperature to cook steak in the oven?
A range of 375°F to 425°F works well. 400°F is a great middle ground—it’s hot enough to cook efficiently but not so hot that it overcooks the exterior before the interior is done.
How do you know when a 1.5 inch steak is done?
The only reliable way is with an instant-read meat thermometer. Visual cues and touch tests are inconsistent, especially for a cut this thick.
Should I cover the steak with foil in the oven?
No, you should not cover it during cooking. Covering it will create steam and soften the beautiful crust you worked hard to create. You only tent it with foil after it’s out, during the resting period.
Troubleshooting Your Steak
If things didn’t go as planned, here’s likely why and how to fix it next time.
- Steak is gray, not browned: Your pan wasn’t hot enough when you added the steak. Make sure you preheat it fully.
- Outside is done but inside is raw: The oven temperature was too high, or you didn’t let the steak come to room temperature before cooking. Also, ensure you’re using the two-step method (sear then bake), not just baking.
- Steak is tough: This could be from overcooking or from choosing a leaner cut that was cooked past medium. Tougher cuts also benefit from slicing very thinly against the grain.
- It’s not juicy: You likely didn’t rest it, or it was overcooked. Using a thermometer to avoid overcooking and resting for the full time are key for juiciness.
Cooking a 1.5-inch steak in the oven is a straightforward technique that delivers consistent, restaurant-quality results at home. The combination of a hot sear and gentle oven heat is unbeatable for thick cuts. By focusing on the core steps—bringing the steak to room temp, drying it well, searing in a hot pan, using a thermometer, and resting patiently—you’ll achieve a perfectly cooked steak every time. Grab your cast iron pan and thermometer, and give this method a try on your next steak night.