01 -
Okay, first things first, let's get those lamb chops ready. Pat them super dry with paper towels; this helps get a good sear. Season them generously with salt, pepper, and a little of that fresh rosemary and thyme. I usually let them sit for about 15-20 minutes while I prep the potatoes. I've forgotten to pat them dry before, and they just steamed in the pan instead of getting that beautiful crust. Don't make my mistake!
02 -
Heat a large, oven-safe skillet (cast iron is my favorite for this!) over medium-high heat with a drizzle of olive oil. Once it’s shimmering, sear those lamb chops for about 2-3 minutes per side until they're nicely browned. They won't be cooked through, and that's exactly what we want. Remove them from the pan and set them aside. The smell at this point is already so promising, a hint of what's to come.
03 -
In the same skillet (don't clean it, those browned bits are flavor gold!), add a pat of butter. Sauté your diced onion until it's softened and translucent, about 5 minutes. Then, toss in the minced garlic and cook for another minute until fragrant – oh, that smell! Whisk in the flour and cook for a minute to create a roux. Slowly, *slowly* whisk in the beef broth and heavy cream, stirring constantly to avoid lumps.
04 -
Bring the sauce to a gentle simmer, stirring until it thickens slightly. Season it with salt, pepper, and the remaining fresh rosemary and thyme. Taste it! This is important. Adjust seasonings as needed. It should be rich and savory. I usually add a little extra black pepper because I love that warmth. This sauce is going to bathe your potatoes and lamb, so make it sing!
05 -
Now for the layering! In a large baking dish (or back into your oven-safe skillet if it's big enough), spread a thin layer of your creamy sauce on the bottom. Arrange half of your thinly sliced russet potatoes over the sauce, overlapping them slightly. Season the potato layer with a pinch of salt and pepper. Pour about a third of the remaining sauce over the potatoes. This is where I sometimes get a little messy, but it's all part of the fun, right?
06 -
Place the seared lamb chops over the potato layer. Top with the remaining sliced potatoes, seasoning them again. Pour the rest of the sauce over everything, making sure the potatoes are mostly submerged. Sprinkle with Parmesan cheese. Cover the dish loosely with foil and bake for 45-50 minutes at 375°F (190°C). Then, remove the foil and bake for another 20-30 minutes, or until the potatoes are fork-tender and the top is golden and bubbly. Let your Smothered Lamb Chop Scalloped Potato Casserole rest for 10 minutes before serving.