Preheat oven to 450 degrees. Add 2 teaspoons of oil to a Pampered Chef bar pan or similarly sized pan, roughly 15 x 10, and spread oil over surface of the pan with a basting brush.
Crumble thawed hash brown patties and pat into bottom of the bar pan. Add 1 tsp salt and 1/2 tsp pepper.
Shred one 8 ounce block of sharp cheddar cheese and one 8 ounce block of pepper jack (or any cheese of your choice that melts well). Sprinkle all but about 1 cup of cheese in an even layer over the top of the hash browns. Place pan on lowest oven rack and bake for 15 minutes.
Add 2 teaspoons of oil to a skillet and set to medium low heat. Dice peppers and onions and saute until soft and just beginning to get some color, about 10 minutes.
Dice ham and bacon into about 1/4 inch cubes and add to skillet with peppers and onions just to warm through, about 2-3 minutes. (substitute meats if desired). Evenly distribute meat and vegetables over the cheesy hash browns
In a large microwavable bowl add a block of cream cheese and 1/2 tsp salt. Microwave until completely soft but not hot, about 30 seconds or so. Next, using a hand mixer whip the cream cheese until light and smooth. Add 10 eggs, and mix on a low speed until most of the cream cheese and eggs are combined.
Pour egg mixture over the hash browns, meat and vegetables. Sprinkle the remaining cheese over the top and bake for 15-20 minutes, until center is set. Remove from oven and allow to rest for 5 minutes. Top with thinly sliced scallions if desired.