1 (6 pound ) leg of lamb
2 teaspoons salt
1 teaspoon freshly ground pepper
1 teaspoon dried whole rosemary
1/4 cup butter, melted
mint sauce or mint jelly(optional)
fresh mint leaves (optional)

Place lamb, fat side up, in a shallow roasting pan.  Combine 
seasonings and butter.  Brush butter mixture evenly over lamb.
Bake 325 degrees for 2 1/2 hours or until meat thermometer
registers 160 degrees.  Let stand 10 minutes before carving.
May serve with mint sauce and garnish with fresh mint leaves.