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Pan-seared steak bites served over creamy mashed potatoes with a rich savory gravy and fresh parsley garnish.

Classic Pan-Seared Steak with Garlic Herb Mashed Potatoes

Indulge in a perfectly pan-seared steak, basted with aromatic garlic and herbs, alongside creamy, fluffy mashed potatoes infused with butter and fresh herbs. This classic meal is comforting, elegant, and surprisingly simple to master.
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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 2 servings
Course: Main Course
Cuisine: American, Classic
Calories: 950
Ingredients Equipment Method Notes

Ingredients
  

For the Garlic Herb Mashed Potatoes
  • 2 lbs Russet potatoes peeled and cut into 1-inch cubes
  • 4 tbsp unsalted butter melted, plus 2 tbsp cold butter for finishing
  • 1/2 cup whole milk or half-and-half, warmed
  • 2 cloves garlic minced
  • 1 sprig fresh rosemary finely chopped
  • 1 sprig fresh thyme finely chopped
  • 1 tsp salt or to taste
  • 1/2 tsp black pepper or to taste
For the Pan-Seared Steak
  • 2 Sirloin or Ribeye steaks 8 oz each, about 1.5 inches thick
  • 1 tbsp olive oil
  • 1 tsp salt or to taste
  • 1/2 tsp black pepper freshly ground
  • 2 tbsp unsalted butter
  • 3 cloves garlic smashed
  • 2 sprigs fresh rosemary
  • 2 sprigs fresh thyme

Equipment

  • Large Pot
  • Potato Masher
  • Large Cast Iron Skillet (or heavy-bottomed pan)
  • Tongs
  • Meat thermometer (optional)
  • Small Bowl

Method
 

Prepare the Garlic Herb Mashed Potatoes
  1. Place the peeled and cubed potatoes in a large pot and cover with cold water by about an inch. Add a generous pinch of salt. Bring to a boil over high heat, then reduce heat to medium and simmer for 15-20 minutes, or until fork-tender.
  2. Drain the potatoes thoroughly in a colander. Return them to the hot pot over low heat for 1-2 minutes to dry out any excess moisture. Remove from heat.
  3. In a small saucepan or microwave-safe bowl, gently heat the 4 tablespoons of melted butter, warmed milk, minced garlic, chopped rosemary, and chopped thyme. Do not boil, just warm and let flavors infuse.
  4. Mash the potatoes using a potato masher or a fork until smooth. Gradually pour in the warm milk mixture, mashing until the potatoes are creamy and lump-free. Stir in the 2 tablespoons of cold butter until melted and fully incorporated. Season with salt and pepper to taste. Keep warm.
Pan-Sear the Steak
  1. Pat the steaks very dry with paper towels. This is crucial for a good sear. Season both sides generously with salt and freshly ground black pepper.
  2. Heat a large cast-iron skillet (or heavy-bottomed pan) over high heat until it just begins to smoke, about 3-5 minutes. Add the olive oil and swirl to coat the pan.
  3. Carefully place the seasoned steaks in the hot skillet. Sear undisturbed for 2-3 minutes per side for a good crust.
  4. Reduce the heat to medium-low. Add the 2 tablespoons of butter, smashed garlic, rosemary sprigs, and thyme sprigs to the skillet.
  5. Tilt the pan slightly and, using a spoon, continuously baste the melted butter and herb mixture over the steaks for another 3-5 minutes, flipping occasionally, until desired doneness is reached. (For medium-rare, aim for an internal temperature of 130-135°F / 54-57°C).
  6. Transfer the steaks to a cutting board and let them rest for at least 5-10 minutes before slicing. Resting allows the juices to redistribute, ensuring a tender and juicy steak.
To Serve
  1. Slice the rested steak against the grain, if desired. Serve immediately with generous portions of the garlic herb mashed potatoes. You can drizzle any remaining pan juices over the steak.

Notes

For extra creamy mashed potatoes, use heavy cream instead of milk. For a different herb profile, try chives or parsley. To achieve a perfect sear, ensure your skillet is very hot before adding the steak. A meat thermometer is highly recommended for perfectly cooked steak.