- Preheat the oven to 220c. Place lamb in a roasting dish and brown all sides and then bush on Dijon Mustard onto each rack.
- Combine the breadcrumbs, herbs, garlic and pesto in a bowl, mix well. Press the breadcrumb mixture evenly over the lamb racks.
- Roast lamb uncovered for 10 minutes. Reduce oven temperature to 160c and cook for a further 15-20 minutes (medium rare) or cook until lamb is cooked as desired.
- Remove lamb. Cover loosley and rest for 5 minutes before cutting the racks.
Serve lamb with roasted vegetables including red onion wedges, zucchini and sweet potato.