Time to assemble! I carefully slice the roasted potatoes open lengthwise. Using a fork, I fluff the insides right in the skin. I spoon a few tablespoons of the hot garlic butter directly into each potato and mix it in—this is what makes them otherworldly. I then stir in the sour cream and half of the cheddar cheese. I slice the rested steaks against the grain into thin strips. I pile the steak strips high onto the buttered potatoes, drizzle everything with more of the pan garlic butter, and top with the remaining cheddar and the green onions.
Pro Tips for Best Results
My number one tip is to let your steaks come to room temperature before cooking. I take mine out of the fridge 30-45 minutes ahead. A cold steak straight from the fridge will seize in the hot pan and cook unevenly, leaving you with a overcooked exterior and a cold, raw center. Room-temperature meat ensures a perfect, even sear and cook from edge to edge.
Don’t skip the potato drying step after scrubbing. I used to be lazy and put slightly damp potatoes in the oven. The steam prevented the skin from getting truly crisp. Now, I dry them so thoroughly with a kitchen towel that they squeak. The dry surface, combined with the oil and salt, is what creates that fantastically salty, crackly, edible potato skin that’s almost better than the filling.
Rest your steak properly! I used to slice right into it, losing all the precious juices onto the cutting board. Now, I rest it for a full 10 minutes, tented with foil. This allows the muscle fibers to relax and reabsorb the juices, which then stay in the meat when you slice it. Those juices are what will mingle with the garlic butter and potato, creating the most flavorful bite imaginable.
Common Mistakes to Avoid
The first time I made this, I used potatoes that were too small. They cooked too quickly and couldn’t hold a substantial amount of filling. You need large, hefty russet potatoes. When you pick them up, they should feel dense for their size. A smaller potato turns this from a majestic, meal-worthy dish into a mere side. Go big or go home!(See the next page below to continue…)