Preheat oven to 375 degrees F. Line the bottom of a baking sheet or jelly roll pan with parchment paper. Butter the sides of the pan or spray with nonstick spray. Whisk together eggs with milk and season with black pepper. Pour eggs into pan. Bake eggs for 15 minutes until they are just set. Add a layer of ham slices and grated cheese to the eggs. Don’t over-cheese them or you’ll have trouble rolling the eggs. Bake for another five minutes. Remove dish and carefully free the eggs from the pan by sliding a thin spatula or knife around the outer edges. Lift one long side of the pan out and carefully roll it up, peeling off the parchment paper as you go. Transfer the rolled omelet to a clean plate and cut into six servings. Garnish with fresh parsley and salt and pepper. Serve while warm.