Preheat your oven to 400°F (200°C). Scrub the russet potatoes and pierce each several times with a fork. Rub with olive oil and place on a baking sheet.
Bake the potatoes for about 50 to 60 minutes until fork-tender and skins are crispy.
In a large skillet over medium heat, cook the ground lamb until browned. Drain excess fat.