Eggs Benedict Skillet Casserole

Butter a large ovenproof skillet with butter. Add a layer torn English muffins, then the ham, and continue layering until all used up. In a large bowl, whisk together eggs, milk, and garlic powder and season with salt and pepper. Pour mixture over skillet and cover with plastic wrap. Refrigerate 1 hour or up to overnight. When ready to bake, preheat oven to 375 degrees F. Bake until egg is cooked through and top is golden, 1 hour. (Cover with foil if top is getting too brown.) Meanwhile, make hollandaise: Bring a small saucepan with 2" water to a boil. In a medium bowl, whisk egg yolks with lemon juice. Put over saucepan and whisk continuously as you add melted butter and cayenne and season with salt. Drizzle hollandaise over bake, sprinkle with paprika and parsley, and serve.