Breakfast Strata

Name: Breakfast Strata
Prep time: 20 min
Cook time: 55 min
Total time: 4 h
Yield: 10
Ingredients: Ingredients; 8 cups day-old bread, cubed (French bread or brioche work best); 8 large eggs; 2 1/2 cups whole milk; 1/2 cup heavy cream; 1 teaspoon salt; 1/2 teaspoon black pepper; 1/4 teaspoon nutmeg; 1 tablespoon Dijon mustard; 2 tablespoons butter, melted; 1 medium onion, diced; 8 oz breakfast sausage, cooked and crumbled; 6 strips bacon, cooked and chopped; 1 1/2 cups sharp cheddar cheese, shredded; 1/2 cup Gruyere cheese, shredded; 1/4 cup fresh chives, chopped; 2 tablespoons fresh parsley, chopped; Butter for greasing; 2 tablespoons grated Parmesan cheese