01 -
Set your oven to 390°F and put the rack in the middle spot.
02 -
Scatter the salt and pepper on the lamb. Heat a skillet on high with 1 tablespoon of oil, browning all sides for 1.5 minutes each, then let it rest for 5 minutes.
03 -
Combine Dijon mustard, garlic, rosemary, and the whisked egg in a bowl.
04 -
In a bowl, mix breadcrumbs, parmesan, garlic, rosemary, salt, and pepper, then pour in the melted butter. Spread this mix onto a plate.
05 -
Brush the mustard mix all over the underside of the lamb, press it into the breadcrumb mixture, then coat the top and sides, pressing into crumbs for full coverage.
06 -
Place the lamb on a roasting rack over a tray. Bake for 20 minutes with a trimmed rack or 30-35 minutes untrimmed until the inside hits 140°F.
07 -
Wrap lamb in foil to rest for 5 minutes before slicing into portions of 2-3 bones each.
08 -
Reduce white wine and broth by three-fourths through boiling. Stir in cream and Dijon, simmering 3-5 minutes until thick.