The porterhouse is two steaks in one — a strip on one side of the bone, a filet on the other — which makes it the king of steak night and the cut most worth cooking correctly. This is the cast-iron method: hard sear, garlic-herb butter baste, and a proper rest. No grill, no sous vide, just a heavy pan and confidence.
Know Your Steak
A porterhouse is a T-bone with a bigger filet section — look for a tenderloin side at least an inch and a quarter wide. Buy it thick, at least an inch and a half: thin porterhouses overcook before they crust. Pull it from the refrigerator 40 minutes ahead, pat it dry, and season boldly on both sides with cracked pepper and salt — a big steak swallows seasoning.
The Cast-Iron Sear
Heat the skillet until the vegetable oil just begins to smoke — cast iron holds the heat a porterhouse demands. Lay the steak in away from you and leave it alone: three to four minutes for a serious crust before the first flip. Sear the edges too, standing the steak on its fat cap with tongs for a minute.
The Butter Baste
After the flip, add butter, smashed garlic cloves, rosemary, and thyme to the pan. Tilt the pan and spoon the foaming, herb-infused butter over the steak continuously — basting cooks the top while the bottom sears, builds flavor into the crust, and makes you feel like a line cook in the best way. Mind the two-steaks-in-one problem: the filet side cooks faster than the strip, so angle the filet toward the pan’s cooler edge.
Temperature and the Rest
Pull at 125°F in the thickest part of the strip for medium-rare after resting — and rest it a full 8–10 minutes under loose foil. Then carve like a steakhouse: run your knife along the bone to free both muscles, slice each against the grain, and reassemble around the bone for the table.
The Supporting Cast
Spoon the pan butter over the slices. Serve with Greek lemon potatoes or a pile of sautéed spinach, and if you like a cheese finish, borrow the crumble move from my NY strip with blue cheese.
FAQ
Porterhouse vs. T-bone — which should I buy?
Same cut, different filet size; porterhouse means more tenderloin. Priced similarly, take the porterhouse every time.
My kitchen fills with smoke. Solutions?
Vent on, oil with a high smoke point, and finish thick steaks in a 400°F oven after searing instead of extending pan time.
One porterhouse feeds how many?
A true 2-pounder comfortably serves two, with the bone as the cook’s trophy.
Recipe Card
Pan Seared Porterhouse Steak
Equipment
- (Help support our site!)Cast Iron Skillet
- (Help support our site!)Chefs Knife
- (Help support our site!)Tongs
- Spoon
Ingredients
- 1 whole Porter House Steak Bone in
- 2 tbsp Vegetable Oil
- 4 clove Garlic Cut in Half
- 1 sprig Rosemary
- 1 sprig Thyme
- 1 tbsp Fresh Cracked Black Pepper Pepper Mill
- 2 tbsp Himalayan Salt Milled or Course
Instructions
- Heat the cast iron skillet on the stove top to get very hot with vegetable oil.
- Season both sides of the steak with Himalayan salt and pepper.
- When the cast iron skillet is heated, place the steak into the pan and add a teaspoon of butter.
- Cook for 4-6 minutes depending on your heated skillet. Turn over and do other side.
- Place in the oven for an additional 10-15 minutes. This depends on thickness of steak and desired temperature of your steak.
- Remove from the oven and place on the top of the stove and keep heating. Add the butter, garlic and fresh herbs to the liquid.
- Tilt the pan on stove and begin basting with the butter oil over the steak.
- This will cause a crusting caramelizing to the steak and incorporate the aromatics to the steak.
- When done remove from the pan. Cut the meat edges off the bone.
- Slice the steak on bias keeping it uniformed. Place the bone on a plate and reattach the meat back in same order. Pour basting liquid over the steak and serve.
