01 -
First things first, get those potatoes ready. Peel and thinly slice your russet or Yukon Gold potatoes, about 1/8-inch thick. I usually use my mandoline for this because, honestly, getting them even is key for even cooking, and my knife skills aren't always up to par after a long day. Pop them into a bowl of cold water while you prep everything else to prevent browning. This step is where I always realize I should have bought more potatoes, oops!
02 -
If you're using fresh steak, pat it dry and season generously with salt and pepper. Heat a tablespoon of oil in a large skillet over medium-high heat. Sear the steak for 2-3 minutes per side until beautifully browned and cooked to your liking. Remember, it'll cook a bit more in the oven. Remove the steak, let it rest, then slice it against the grain into bite-sized pieces. I've definitely overcooked steak here before, so keep an eye on it! A medium-rare sear is what you're aiming for.
03 -
In that same skillet (don't clean it, those bits are flavor!), melt the unsalted butter over medium heat. Add your minced fresh garlic and chopped rosemary or thyme. Sauté for about a minute until fragrant, but don't let the garlic burn – that's a mistake I only made once! The smell here, oh my goodness, it's the best. Season this glorious mixture with a pinch of salt and black pepper. It’s the heart of our Garlic Butter Steak Cheddar Potato Bake.
04 -
Drain your potato slices really well and pat them dry. In a large bowl, toss the potato slices with about half of your garlic butter mixture, making sure every slice gets coated. Lightly grease a 9x13 inch baking dish. Start layering about a third of the potatoes on the bottom. Arrange half of the sliced steak over the potatoes. Sprinkle with a third of the shredded cheddar and grated Parmesan. Repeat these layers, finishing with the remaining potatoes on top. This is where I always get a little messy, but it's part of the fun!
05 -
Drizzle the remaining garlic butter over the top potato layer. Cover the baking dish tightly with foil. Bake in a preheated oven at 375°F (190°C) for 30 minutes. This steaming helps the potatoes get tender. After 30 minutes, remove the foil, and the kitchen will start smelling incredible. Now, it’s time for the final cheesy flourish!
06 -
Sprinkle the remaining cheddar and Parmesan cheese evenly over the top layer of potatoes. Pop it back into the oven, uncovered, for another 20-25 minutes, or until the potatoes are fork-tender and the cheese is bubbly and golden brown. You want that gorgeous, slightly crispy cheese crust. Let it rest for 5-10 minutes before serving, then garnish with fresh chopped parsley. The aroma of this Garlic Butter Steak Cheddar Potato Bake is just divine!