Preheat your oven to 375°F (190°C) and grease a muffin tin.
In a large bowl, mix all the meatloaf ingredients until well combined.
Press the meatloaf mixture into the muffin tin cups, filling each to the top.
Bake for 20-25 minutes until cooked through and browned on top.
Meanwhile, boil the potatoes in salted water until tender (about 15-20 minutes).
Drain the potatoes, then mash with milk, butter, salt, and pepper until smooth.
Once meatloaf muffins are done, cool slightly, then pipe or spoon the mashed potatoes on top.
Garnish with fresh chives or parsley and serve.