Preheat oven to 375 degrees.
In a large skillet or griddle, heat on high adding 2 T Olive Oil. When hot, sear each side of each rack until lightly browned. Where top fat, in particular, is nice and browned. Remove.
Place racks in roasting pan FAT side UP, then put in the oven.
Mix together dijon, spices, set aside.
Melt the butter in a small bowl and add the breadcrumbs. Combine and set aside.
Cook for 10 minutes, remove.
Place meat on a plate or cutting board.
With a pastry brush or spoon paint the but of the meat only or the fattest part of rib meat, the butt. Do not paint fatty areas.
Press dijon covered meat into bread crumbs.
Place back into the roasting pan. Insert the thermometer into the thickest part of the meat.
Cook for another 10-15 minutes until the thermometer reaches 130 degrees. Remove and let set for 5 minutes for juices to absorb back into meat. Lamb will continue to cook to about 135 degrees.
Lamb will be just more than rare at this temperature which is ideal for this cut of meat.
If you like meat a little more done you can keep in the oven until 133 degrees for a 135-7 finish which will be a true medium-rare.
Cut meat by rib and serve.
ENJOY!