If you’re grilling steak this summer, don’t goof around. Make a giant, juicy Grilled Porterhouse Steak with Mushrooms and claim that grill as your throne.

grilled porterhouse steak and mushrooms in skillet

What is a Porterhouse Steak?

This guest post was kindly written by Gerry of Foodness Gracious

The porterhouse steak is a two-fer. You get the NY Strip on one side and a nice little tenderloin filet on the other, with the bone running right up the middle.

When Carrian asked me if I’d be interested in guest posting for her Dude Food party, I didn’t even think about it. First of all, I am a dude. And second, I love my food. With both boxes checked, I was fully qualified for dude food.

I had a hard time coming up with an idea of what to make. My mind was full of crazy things that I’d love to eat if I was able to choose, like ultimate burgers or fried chicken breakfast sandwiches. But because I really only eat steak on special occasions, this grilled porterhouse steak was the perfect recipe!

The porterhouse steak I picked up weighed about a pound and a quarter, and do you see that amazing color and marbling? Usually I’d stick to a tenderloin filet because I don’t like working for my food and trying to maneuver that bone, but it was so worth it.

I like to keep steaks simple, so I just seasoned it with some salt and black pepper. a tiny drizzle of olive oil and threw it on the grill. A few minutes on each side and it was done. Medium rare is my sweet spot.

I sautéed some shiitake mushrooms with diced shallots, butter and rosemary and plopped them on top of that behemoth porterhouse. It was the perfect side dish and didn’t take away the spotlight from the meat.

read more: Looking for decadent beef recipes? Try our Traeger Tri Tip Roast next!

uncooked porterhouse steak in brown paper

What’s Needed for Porterhouse Steak and Mushrooms?

A high-quality porterhouse steak doesn’t need much doctoring up to taste amazing. Here’s everything I used to make this grilled porterhouse steak and mushrooms:

  • Porterhouse steak
  • Sea salt and black pepper
  • Olive oil
  • Shiitake mushrooms
  • Butter
  • Fresh rosemary

How to Grill a Porterhouse Steak

Cooking a porterhouse steak may seem intimidating because of the sheer size of the meat, but trust me when I say it’s incredibly simple. Here’s how to cook a porterhouse steak:

  1. Preheat your grill to high.
  2. Drizzle the steak with olive oil, then season with salt and pepper.
  3. Grill the steak to your desired doneness.
  4. Transfer the steak to a plate and cover with foil. Let rest while making the mushrooms.
  5. To sauté the mushrooms, melt butter in a skillet and cook the mushrooms until softened.
  6. Stir chopped rosemary into the mushrooms.
  7. Spoon the mushrooms over the steak and serve.

How Long to Grill a Porterhouse Steak

A 1-pound porterhouse steak will need to grill for roughly 4 minutes on each side over high heat. 

What to Serve with Grilled Porterhouse Steak

Grilled steak and mushrooms pair nicely with an array of sides, salads, and veggies. Here are a few ways you can serve this grilled porterhouse steak:

grilled porterhouse steak and mushrooms in skillet with knife and fork

How to Tell if a Steak is Done

The “touch” test is an easy way to tell if a steak is done. Make a relaxed fist, then touch the fleshy part of your hand between the thumb and forefinger. It is soft, like a rare steak. Next, tighten the fist a little. It is firmer, like a medium steak. Make a tight fist. It will feel very firm, like a well-done steak.

Tips for Making Grilled Porterhouse Steak

Be sure to let the porterhouse steak rest on your countertop for 30 minutes before grilling it. This gives the meat time to come to room temperature and ensures that it cooks evenly throughout.

I seasoned my grilled porterhouse steak simply with salt and pepper, but you’re welcome to use your favorite steak seasoning instead.

After grilling the steak, let it rest for a few minutes before cutting into it. This gives the juices time to redistribute and makes for a more tender bite.

More Delicious STEAK RECIPES:

Porterhouse Steak with Mushrooms

Grilled Porterhouse Steak with Mushrooms

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Servings: 1
Prep Time: 5 minutes
Cook Time: 10 minutes
Rest Time: 30 minutes
Total Time: 45 minutes


If you're grilling steak this summer, don't goof around. Make a giant, juicy Grilled Porterhouse Steak with Mushrooms and claim that grill as your throne.


  • 1 Porterhouse Steak, (at least 1 pound)
  • 1 Tablespoon Olive Oil
  • Sea Salt and Black Pepper

For the Mushrooms

  • 3 Tablespoons Butter
  • 8 Ounces Shiitake Mushrooms
  • 1 Tablespoon Chopped Fresh Rosemary


  • Bring the steak to room temperature for at least 30 minutes.
    1 Porterhouse Steak
  • Preheat your grill to high.
  • Drizzle lightly with the olive oil.
    1 Tablespoon Olive Oil
  • Season with salt and black pepper.
    Sea Salt and Black Pepper
  • Grill the steak for about 4 minutes on each side or more if desired.
  • Transfer the steak to a plate, cover with foil and let rest.
  • Melt the butter in a small pan.
    3 Tablespoons Butter
  • Add the mushrooms and saute for about 5 minutes over a medium-high heat and the mushrooms start to soften.
    8 Ounces Shiitake Mushrooms
  • Add the chopped rosemary and stir.
    1 Tablespoon Chopped Fresh Rosemary
  • Place the steak on a plate and spoon the mushrooms over the top.
  • Pour any extra pan juices from the mushrooms over the steak also.
  • Serve at once.


To reheat steak, place steak on a wire rack inside of a baking sheet.  Heat at 250 degrees until steak reaches an internal temperature of 110 degrees, or about 30 minutes.


Serving: 1gCalories: 1180kcalCarbohydrates: 1gProtein: 71gFat: 98gSaturated Fat: 44gCholesterol: 281mgSodium: 484mgPotassium: 1051mgSugar: 1gVitamin A: 1050IUCalcium: 30mgIron: 7mg
Author: Sweet Basil
Course: 100 + BEST Easy Beef Recipes for Dinner, America's Best 4th of July Desserts, Recipes and Sides, Over 50 Easy Grilling Recipes
Cuisine: American

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If you're grilling steak this summer, don't goof around. Grill a giant juicy Porterhouse Steak with mushrooms and claim that grill as your throne. ohsweetbasil.com


You can keep up with Gerry over on his blog, Foodness Gracious!