Preheat a grill pan on MED-HIGH heat.

Season the steaks all over with salt and pepper.

Sear in the pan for 3 minutes on each side. (Cooking time will vary depending on thickness of the steaks and preferred doneness.)

Meanwhile make the mashed potatoes. Cover the potatoes in a large pot with salted water. Bring to a boil and cook for about 20 minutes until soft and cooked through.

Drain the potatoes and remove the skin with a paper towel. Gently mash the potatoes in a pot and add the butter. Bring the milk to a boil then add to the mashed potatoes. Blend with a hand blender until well combined and smooth. Season with salt and pepper then set aside.

For the garlic herb butter combine all ingredients in a small bowl and mix well.

Slice the steaks and arrange on a plate. Serve with mashed potatoes on the side and top with the garlic herb butter. Serve!