Sirloin steak finished in the oven gives you a restaurant-quality sear with a perfectly pink center when you use a cast iron skillet. Learning how to bake a sirloin steak in the oven is simpler than most people think, and it takes less than 20 minutes from start to finish.
The trick is a hot pan on the stove first, then a quick trip into a preheated oven. This method works every time once you know the right temps and timing.
What You Need Before You Start
Sirloin is a lean cut with good beefy flavor. It can dry out if you overcook it, so a meat thermometer is your best friend here.
Ingredients And Tools
- Two sirloin steaks, about 1 inch thick (8 to 10 ounces each)
- 1 tablespoon of olive oil or another high smoke point oil
- Kosher salt and coarse black pepper
- 2 tablespoons of butter
- 2 cloves of garlic, smashed
- A few sprigs of fresh thyme or rosemary (optional)
- Cast iron skillet or another oven safe pan
- Instant read meat thermometer
- Aluminum foil for resting
Pick The Right Steak Thickness
Thickness matters more than weight. A 1 inch steak bakes in about 6 to 8 minutes in a 400°F oven.
A 1.5 inch steak needs closer to 10 to 12 minutes. If your steaks are thin, under half an inch, skip the oven and just pan sear them.
How To Bake A Sirloin Steak In The Oven
Follow these steps in order. The whole process moves fast, so have everything ready before the pan gets hot.
Step 1: Preheat The Oven And The Pan
Set your oven to 400°F. Place your cast iron skillet on the middle rack while the oven heats.
Let it sit for at least 15 minutes. A screaming hot pan is what gives you that dark crust.
Step 2: Dry And Season The Steaks
Pat the steaks dry with paper towels. Moisture is the enemy of a good sear.
Season both sides generously with salt and pepper. Let them sit at room temperature for 20 to 30 minutes if you have the time.
Step 3: Sear On The Stovetop
Move the hot skillet to a burner set to high heat. Add the oil and swirl it around.
Lay the steaks in the pan away from you. Do not move them for 2 minutes.
Flip once and sear the other side for another 2 minutes. Both sides should be deep brown.
Step 4: Add Butter, Garlic, And Herbs
Drop the butter, garlic, and herbs into the pan. Tilt the pan slightly and spoon the foaming butter over the steaks for about 30 seconds.
This basting step adds a lot of flavor and helps the crust set.
Step 5: Move The Pan To The Oven
Slide the whole skillet into the oven. Bake until the internal temperature hits your target.
- Rare: 120°F to 125°F
- Medium rare: 130°F to 135°F
- Medium: 140°F to 145°F
- Medium well: 150°F to 155°F
Check the temp at the 5 minute mark on your first try. Every oven runs a little different.
Step 6: Rest The Steaks
Put the steaks on a cutting board or plate. Tent them loosely with foil.
Wait 5 to 10 minutes. The temp will rise another 5 degrees while it rests, so pull it a bit early.
Step 7: Slice Against The Grain
Look at the lines running through the meat. Cut across them, not with them.
Slice into half inch strips. This keeps every bite tender.
Common Mistakes To Avoid
Overcrowding The Pan
Two steaks max in a 10 or 12 inch skillet. Three or more will steam instead of sear.
Skipping The Rest
Cut too soon and the juices run out onto the board. Give it the full 5 minutes at least.
Trusting Time Over Temperature
Recipe times are a guide, not a rule. Your steak’s thickness, starting temp, and your oven all change the cook time. Use a thermometer every single time.
What To Serve With Oven Baked Sirloin
Keep the sides simple so the steak stays the star. Here are a few that work well:
- Roasted garlic mashed potatoes
- Sauteed green beans with almonds
- A simple wedge salad with blue cheese
- Grilled asparagus with lemon
- Crusty bread for soaking up the pan juices
Tips For The Best Results
Let The Steak Come To Room Temp
Cold meat cooks unevenly. Twenty minutes on the counter makes a real difference in how even the center cooks.
Use A Heavy Pan
Cast iron holds heat better than thin nonstick. If you don’t own one, a stainless steel skillet works too.
Open A Window
Searing at high heat creates smoke. Turn on your hood vent or crack a window before you start.
Adjust For Your Oven
If your oven runs hot, drop the temp to 375°F. If it runs cool, bump it to 425°F. An oven thermometer takes the guesswork out of it.
Storing And Reheating Leftovers
Wrap leftover steak tight and keep it in the fridge for up to 3 days. Reheat it gently in a 300°F oven for 8 to 10 minutes, or slice it cold over a salad.
Avoid the microwave if you can. It turns a nice medium rare steak gray and tough in seconds.
Final Thoughts
Oven baking a sirloin gives you a steady, even cook without standing over a hot pan the whole time. Sear it hard on the stove, finish it in a 400°F oven, and pull it 5 degrees before your target temp.
Once you nail this method, you can use it for ribeye, strip steak, or even thick pork chops. The pan sear plus oven finish is a skill worth keeping in your back pocket for busy weeknights and weekend dinners alike.