Preheat the oven to 410℉/210℃.

Chop the garlic and mince the rosemary. Prepare a small bowl. Add olive oil, chopped garlic and rosemary. Mix well and set aside.

Season lamb racks with salt and pepper and rub garlic-rosemary oil all over them. Set racks fat-side up on a large rimmed baking sheet and let sit for 1 hour.

To ensure accuracy, insert the probe into the thickest part of the meat, making sure the safety line is completely immersed.

Select lamb→ chop→ chop in the parameters list. Set the target temperature to 140℉/60°C. Place the lamb on the oven tray, then place the oven tray on a rack in the oven.

To begin the process, press the start button on your phone. You will be notified when the lamb ready to come out of the oven.

Using a pair of oven gloves, carefully remove the tray with the lamb and transfer to a heat-resistant surface. Let the lamb rest for at least 3 minutes. (Note: the internal temperature will continue to rise.)

Carefully Remove the Probe.

Serve and enjoy!