01 - Preheat oven to 400°F. Line baking sheet with parchment paper or aluminum foil.
02 - Pat rack of lamb completely dry with paper towels. Trim any excess fat if necessary.
03 - Rub lamb thoroughly with olive oil, then season generously with salt and pepper on all sides.
04 - Combine rosemary, thyme, and garlic in small bowl. Press herb mixture firmly onto meaty side of lamb.
05 - Optionally brush lamb with Dijon mustard before applying herb crust for enhanced flavor.
06 - Place rack fat side up on prepared baking sheet.
07 - Roast in preheated oven for 20-25 minutes until medium-rare (internal temperature reaches 130°F). Adjust cooking time based on preferred doneness.
08 - Remove from oven and tent loosely with foil. Allow to rest for 10 minutes before slicing.
09 - Slice between individual ribs. Garnish with fresh parsley and flaky sea salt before serving.