Preheat the oven to 375 degrees Fahrenheit.
Bring a large pot of water to a rolling boil on the stovetop. Peel the potatoes, cut them into large cubes, and place them in the pot. Boil for about 20 minutes or until the potatoes are fork-tender.
Strain the water from the potatoes and add them to a large mixing bowl.
Add the cream cheese, butter, and parmesan cheese to the mixing bowl. Mix with an electric mixer until smooth and creamy.
Add 1 cup triple cheddar cheese, salt, parsley, and ¾ cup bacon to the mixing bowl and mix with the electric mixer until well combined.
Scoop the mashed potatoes into an 8x8 baking dish and smooth out the top with a rubber spatula.
Sprinkle the remaining triple cheddar cheese and bacon evenly over the top of the potatoes.
Bake the potatoes in the preheated oven for 20 minutes, or until the edges are lightly browned and the cheese is melted.