Set lamb out at room temperature, sprinkle with a small amount of salt and let sit for 30 minutes.
Meanwhile, preheat oven to 425 degrees F.
Prepare the sauce by combining the ingredients in a small bowl and stirring together.
After 30 minutes, pat the lamb dry. Sprinkle with salt and pepper.
Heat olive oil in a large cast iron or oven safe skillet over medium high heat.
Add the lamb and sear it, meat side down, for 2-3 minutes.
Flip the lamb so that the bones are facing down. Spoon the sauce over the top of the meat and place the skillet in the oven.
Roast lamb for 15-25 minutes, until the internal temperature reaches 125 degrees F.
Remove the lamb from the skillet, placing it on a cutting board and tenting with foil. Let it rest for 15 minutes before slicing.
When ready to serve, cut between the bones and serve with any excess sauce from the skillet or board.