Need some help on a lamb dish.

Boneless leg, tell the butcher don't tie it up. Take it home, unroll it and then spread rosemary leaves, red onion slices, wilted fresh spinach leaves, then about three peeled carrots into the cavity. Roll back up and tie, on surface olive oil, more galic and rosemary, salt and pepper. 350-75 for about 2.5 hrs. Sides mashed potatoes, and sauteed haricort vert with almonds and steamed broccoli.