In a large bowl, combine bread crumbs, garlic, rosemary, 1 teaspoon salt and 1/4 teaspoon pepper. Toss in 2 tablespoons olive oil to moisten mixture. Set aside. Season the rack all over with salt and pepper. Heat 2 tablespoons olive oil in a large heavy oven proof skillet over high heat. Sear rack of lamb for 1 to 2 minutes on all sides. Set aside for a few minutes. Brush rack of lamb with the mustard. Roll in the bread crumb mixture until evenly coated.
For oven cooking, place the lamb in an uncovered roasting pan and cook at 165 degrees C (325 degrees F). For every 0.5 cm (inch) of thickness, allow 10 to 15 minutes of cooking time. You can allow more time for a well-done steak, cooking to an internal temperature of 76 degrees C (170 degrees F).
Grilling or Broiling. Ham steaks are fully cooked, so you can heat them up on a grill in less time than it takes to cook burgers or steaks. Heat the grill to medium or medium high and lay the steaks on the slats. Cook about 3 minutes per side or until heated through.Thicker steaks will require more cooking time. Alternatively, place the ham steaks on a broiler pan and cook with high heat about 3 inches away from the heat source for 3 to 5 minutes per side, depending on the steaks' thicknesses.or a fuss-free ham steak dinner, bake the steaks in an oven preheated to 375 degrees Fahrenheit for 15 to 20 minutes, depending on thickness.