In a food processor, puree the above to a "pesto-like" consistency.
The rosemary will not completely puree. Evenly coat racks of lamb with pesto mixture (Do not put pest on exposed rib bones) May wish to add d=salt and pepper to taste. Let lamb racks marinate over-night in the fridge - or at least 4 hours.
To cook, in a medium-high skillet, or cast iron pan, place 1 teaspoon extra virgin oil. Sear racks 4 to 5 minutes each side - until lamb loins are beautiful, dark crusty brown.
Finish racks in 350 degrees for 15 (very rare) 20 (rare) 25 (medium rare) minutes.
Let rest five minutes before slicing chops.
Serve two per guest. Two racks, 8 ribs each, serves 4 to 6.