01 -
Pat those lamb chops dry, really dry, or they won't sear properly. Season them generously with salt and pepper – don't be shy! I always forget to season enough on the first go, oops. In a heavy-bottomed skillet, sear the chops over medium-high heat until they're beautifully browned on both sides. This isn't about cooking them through, just getting that gorgeous crust and locking in flavor. You'll smell that amazing lamb aroma immediately, it's the best part!
02 -
Remove the lamb and set aside. In the same skillet, toss in your diced onion and cook until softened, scraping up all those delicious browned bits from the lamb – that's flavor gold right there! Add the minced garlic and cook for just a minute until fragrant. Stir in the flour and cook for another minute to make a roux, then slowly whisk in the broth, heavy cream, Dijon, and Worcestershire. This is where the magic happens, watching it thicken.
03 -
While the sauce simmers, get those potatoes sliced super thin. A mandoline is your best friend here, honestly. If you're using a knife, just be careful and aim for consistent, almost translucent slices. This is where I always get a little messy, potatoes flying everywhere! Once sliced, arrange a single layer in the bottom of your baking dish. You want a nice, even foundation for all that creamy goodness.
04 -
Pour a third of your creamy sauce over the potato layer, making sure to spread it evenly. Then, nestle half of your seared lamb chops over the sauce and potatoes. Sprinkle with a bit of fresh rosemary and thyme. Repeat with another layer of potatoes, sauce, the remaining lamb, and more herbs. It's like building a delicious, savory tower, and the kitchen smells are getting incredible!
05 -
Finish with the remaining sliced potatoes, making sure they're mostly covered by the final pour of sauce. This helps them cook through evenly and prevents dry spots. Cover your baking dish tightly with foil. This is crucial for steaming those potatoes until they're tender. I didn't expect that the first time I made it, and my top layer was a bit firm, oops!
06 -
Preheat oven to 375°F (190°C). Pop that covered casserole into the preheated oven and bake for 60 minutes. After the initial bake, remove the foil, sprinkle generously with Parmesan cheese, and bake uncovered for another 20-30 minutes until the cheese is golden and bubbly and the potatoes are fork-tender. Let it rest for 10-15 minutes before serving – this lets the sauce settle and makes for easier serving. The smell of that cheesy crust, oh my!