01 -
Preheat oven to 400°F (200°C). Scrub the russet potatoes, pat dry, and prick each one a few times with a fork. Rub with olive oil and salt, then place directly on the oven rack or a baking sheet. Bake for 45-50 minutes, or until fork-tender.
02 -
While the potatoes bake, heat 1 tablespoon olive oil in a large skillet over medium heat. Add ground beef or lamb and cook until browned, breaking it apart with a spoon. Drain excess grease if needed. Stir in the onion, carrots, and garlic. Cook for 5 minutes until softened. Add the tomato paste, Worcestershire sauce, thyme, rosemary, salt, and pepper. Stir well. Pour in the beef broth and simmer for 10 minutes until the mixture thickens slightly. Stir in the frozen peas, then remove from heat.
03 -
Once the potatoes are baked, carefully slice off the top third of each potato. Scoop out most of the fluffy potato (leave a thin layer inside the skin) into a mixing bowl. Mash the potatoes with milk, butter, garlic powder, salt, and pepper until smooth. Stir in shredded cheese if using.
04 -
Spoon the Shepherd's Pie filling into each hollowed-out baked potato. Top with a generous scoop of mashed potatoes. If desired, sprinkle with extra cheese.
05 -
Place the stuffed potatoes back on the baking sheet. Bake at 400°F for 10-15 minutes, or until the tops are lightly golden. Serve warm.