A few shakes of smoked paprika, garlic powder, onion powder, brown sugar, and salt mixed with olive oil to make a wet rub does the trick and allows the leg of lamb to speak for itself. Mix, rub, and roast - that's it!
Combine all of the seasonings with the olive oil in a small bowl to form a wet paste. Rub the paste all over the meat.
Line a baking sheet with foil. Place a wire rack over the foil lined baking sheet.
Place the seasoned roast onto the wire rack and wrap the pan tightly with foil.
Place in the oven and bake for 3 1/2 - 4 hours.
Remove from the oven and allow to rest, do not remove foil, for 20-30 minutes.
Notes
You can find lamb leg roast at most grocery stores at the meat counter. We chose boneless lamb leg roast, but you can use bone-in if you prefer.
Boneless leg of lamb roasts will come wrapped in netting, which is typically oven safe but always check to make sure before putting it in the oven. The netting holds the deboned meat in place as it cooks. You can wrap it with butchers twine if your netting is not oven-safe.