1.) Place the potatoes and Ggarlic in a large saucepan - cover with water and cook until the Potatoes are tender.
2.) Meanwhile, pre-heat the oven to 350 degrees. Spray a pie dish with cooking spray.
3.) Drain the potatoes and place back into the saucepan and add butter and mash.
4.) Add 1/2 cup parmesan cheese, half and half, sour cream and the eggs and whip until light and fluffy.
5.) Season to taste with salt, pepper, cayenne pepper and cumin - spoon half the mixture into the prepared oven dish - top with 1 cup shredded cheese, pressing the cheese down slightly - spoon the remaining mashed potatoes over the cheese.
6.) Sprinkle with the remaining parmesan, the bread crumbs and the remaining cheese.
7.) Dot with the cubed butter and bake for 10 minutes or until golden brown. Garnish with parsley.
8.) Cut into wedges and serve.