Porterhouse Steak with Herb Butter and Crispy Garlic Rosemary Potatoes

By August 7, 2023Recipes

Indulge in culinary delight with a sizzling Porterhouse Steak, its savoury richness seared to perfection. Paired with crispy Garlic Rosemary Potatoes that whisper with herb-infused aroma. Crowned with melting Herb Butter, each bite is a masterpiece of flavour, a symphony for your senses.

Prep Time: 15 Minutes  |  Cook Time: 30  Minutes  | Resting time: 10 minutes


For the steak:

  • 1 Porterhouse steak (approximately 1.5 inches thick)
  • Salt and freshly ground black pepper, to taste

For the herb butter:

  • 1/2 cup unsalted butter, softened
  • 2 tablespoons chopped fresh herbs (such as parsley, thyme, rosemary, or a combination)
  • 1 clove garlic, minced
  • Salt and freshly ground black pepper, to taste

For the crispy garlic rosemary potatoes:

  • 1.5 lbs (680g) baby potatoes, washed and halved
  • 3 tablespoons olive oil
  • 3-4 garlic cloves, minced
  • 1 tablespoon fresh rosemary leaves, chopped
  • Salt and freshly ground black pepper, to taste


  1. Take the Porterhouse steak out of the refrigerator and let it sit at room temperature for about 30 minutes before cooking. Preheat your oven to 400°F (200°C) during this time.
  2. While the steak is resting, prepare the herb butter. In a small bowl, mix the softened butter, chopped fresh herbs, minced garlic, salt, and black pepper until well combined. Place the herb butter on a piece of plastic wrap, roll it into a log shape, and refrigerate it until ready to use.
  3. Now, let’s prepare the crispy garlic rosemary potatoes. In a large bowl, toss the halved baby potatoes with olive oil, minced garlic, chopped rosemary, salt, and black pepper until the potatoes are evenly coated.
  4. Spread the seasoned potatoes in a single layer on a baking sheet lined with parchment paper or aluminium foil.
  5. Roast the potatoes in the preheated oven for about 25-30 minutes or until they are crispy and golden brown. Make sure to give them a stir halfway through the cooking time for even browning.
  6. While the potatoes are roasting, let’s cook the steak. Preheat a grill or a heavy-bottomed skillet over high heat.
  7. Season the Porterhouse steak generously with salt and freshly ground black pepper on both sides.
  8. Once the grill or skillet is hot, place the steak on it and cook for about 4-5 minutes on each side for medium-rare doneness. Adjust the cooking time based on your preferred level of doneness. Remember that the thickness of the steak will affect the cooking time.
  9. Once the steak is cooked to your desired doneness, remove it from the heat and let it rest for about 5-10 minutes. During this time, the juices will redistribute, resulting in a more tender and flavorful steak.
  10. While the steak is resting, take the herb butter out of the refrigerator and slice it into rounds.
  11. Serve the Porterhouse steak with a couple of slices of herb butter on top, allowing it to melt over the hot steak.
  12. Plate the steak alongside the crispy garlic rosemary potatoes, and you have a delicious and satisfying meal ready to enjoy!

Remember to adjust the cooking time for the steak based on its thickness and your preferred level of doneness. Cooking times may vary, so use a meat thermometer to ensure the steak reaches your desired internal temperature (145°F/63°C for medium-rare).