Mashed Potatoes: Peel and cut potatoes into 1” cubes. Place into a deep medium saucepan covering completely with cold water plus 1 teaspoon salt. Boil on medium-high heat until the potatoes are fork tender and cooked through. About 15-20 minutes.
Meatloaf Muffins: Preheat the oven to 350°F. Spray the muffin cups of a standard size 12- cup muffin pan with cooking spray.
In a large mixing bowl stir together the ground beef, tomato soup, ketchup, mustard, Worcestershire sauce, milk, eggs, onion soup mix, granulated garlic, black pepper and breadcrumbs. Mix using your hands or a large spoon until the mixture holds together.
Divide the meatloaf mixture into 12 equal portions using an ice cream scoop dropping into the wells of the prepared muffin pan. Drizzle the tops with additional ketchup.
Transfer to preheated oven and bake for 20-25 minutes or until cooked through and an internal temperature of 155°F is reached.
Mash the Potatoes: Meanwhile, drain the potatoes and add them back to the pot. Add the butter, cream cheese, 1/4 cup milk, garlic salt and dried parsley. Whip using a hand mixer until smooth adding additional milk as needed.
Place the whipped potatoes into a piping bag fitted with a large tip and pipe them onto the top of each meatloaf in a spiral pattern. (Alternately, spread the potatoes on top using an offset icing spatula "frosting" the muffins.)
Turn the oven to Broil. Broil the potatoes on high for 5-7 minutes or until the potato frosting is browned on the edges.
Carefully remove from the pan and enjoy!