Season the lamb with lots of salt and pepper. Heat the olive oil in a deep frying pan over high heat until it smokes. Add the lamb and brown on both sides, about 4 minutes a side. Set the lamb aside to cool. DO NOT WASH OUT THE PAN with all that yummy fat. You’ll make your lamb jus at the end in the same pan.
Preheat the oven to 450F.
Make the herb crust. Combine the bread crumbs, chopped garlic, grated parmesan, rosemary, and thyme in a bowl. Spread the dijon mustard all over the lamb, set it in a roasting pan, and pack on the bread crumb crust in an even layer. The lamb will take 25 minutes for medium rare, as well as 10 minutes of resting once it comes out of the oven.
Once the lamb has been roasting for 10 minutes, start the risotto. Boil the butternut squash in some water until tender, about ten minutes. Transfer the squash and 1/4 cup of the cooking liquid into a blender or food processor with a pinch of nutmeg, the sage, and some salt and pepper. Blend until smooth.
Warm the chicken stock in a small pan over medium heat. You’ll be adding that to the risotto as it cooks, and warming it will prevent the risotto from coming down in cooking temperature as you go.
Heat a deep sauté pan over medium-high heat with the olive oil. Sautee the onion and garlic with some salt and pepper until soft, about 4 minutes. Add the orzo and toast it in the pan for a few minutes until it starts to get a little golden. Add the wine, stirring vigorously until it’s absorbed. Risotto is a labor of love, meaning there’s a lot of stirring and ladling liquid, over and over again, so add a ladle full of chicken broth, stirring for a few minutes until it’s absorbed, and then add another ladle full. Keep at it until all of the broth is gone, about 20 minutes.
While you’re keeping an eye on your risotto and doing all that stirring, heat a small pot over medium heat with the balsamic vinegar and brown sugar. Let it come to a bubble and then lower the heat to medium-low so it’s just at a simmer. Let it reduce until it coats the back of a spoon, about 15 minutes. At the end, turn the heat to low and season with salt and pepper.
Start the jus. Heat the pan you browned the lamb in over medium-high. Add the wine, scraping up all the delicious bits in the pan. Then add the beef broth or stock, salt and pepper. Let it reduce until it’s thickened a bit, about ten minutes. Whisk in the butter at the end.
Once all of the broth has been absorbed into the risotto, stir in the butternut squash puree. Warm for a few minutes, then turn off the heat and add the sage leaves and parmesan. Taste for seasoning.
After resting the lamb for 10 minutes, slice into individual chops. Arrange on a bed of sautéed greens and drizzle with the jus. Serve extra jus alongside.
Using a spoon, drizzle the risotto with a little of the balsamic reduction. The rest you can eat with some cheese and the rest of that champagne. Boss.