- 2 (8 bone) racks of lamb, fully trimmed
- salt and ground black pepper to taste
- 1 tablespoon vegetable oil
- 2 teaspoons Dijon mustard
- 1 teaspoon minced fresh rosemary
- 1/8 teaspoon ground cinnamon
- 1/8 teaspoon ground cumin
- 1/3 cup sliced shallot
- 1 pinch salt
- 1 cup fresh blueberries
- 1 cup dry red wine
- 1 pinch ground black pepper
- 1 tablespoon balsamic vinegar
- 1 tablespoon butter, or more as needed
- Preheat oven to 375 degrees F (190 degrees C).
- Season lamb generously with salt and black pepper. Heat oil over medium-high heat in an oven-proof skillet. Sear lamb on all sides until well browned, 3 to 5 minutes per side. Turn off heat. Remove lamb to a platter.
- Mix together Dijon mustard, rosemary, cinnamon, and cumin in a small bowl. Spread a thin layer of the mustard mixture on each rack of lamb.
- Place chopped shallots and pinch of salt into the same skillet. Cook and stir over medium-heat until shallots begin to lose moisture and become browned and soft, about 5 minutes. Add blueberries and continue cooking for about 2 minutes. Stir in red wine, turn off heat, and stir mixture to deglaze the pan.
- Place the racks of lamb into the skillet and interlace the rib bones together to push the lamb racks close together, leaving a lamb bone "zipper" in the center. Place the lamb racks into the center of the skillet. Season with a pinch of black pepper.
- Place skillet in pre-heated oven and roast lamb until internal temperature reaches 125 degrees F (52 degrees C) for medium-rare, about 20 minutes.
- Remove lamb to a cutting board to rest about 5 minutes.
- Drizzle balsamic vinegar into the blueberry sauce; add a pinch of salt. Turn heat to medium-high and bring to a simmer to reduce sauce by half, about 4 minutes. Turn off heat and stir in butter. When butter is melted, check seasonings and add more salt if needed.
- Slice racks into pieces of 2 ribs each. Serve topped with a spoonful of the blueberry sauce.
Rack of Lamb with Blueberry Sauce, recipe