Bacon Egg And Hash Brown Casserole For A Lazy Weekend Breakfast

Ingredients

• 1/2 lb bacon, chopped
• 1 medium onion, chopped (1/2 cup)
• 1 bag (30 oz) frozen country-style shredded hash brown potatoes, thawed, patted dry
• 2 cups shredded Cheddar cheese (8 oz)
• 1/4 cup grated Parmesan cheese
• 9 large eggs
• 1 1/4 cups milk
• 1 container (8 oz) sour cream
• 1 teaspoon salt
• 1 teaspoon ground mustard
• 1/4 teaspoon pepper
• 1/2 cup cornflake crumbs or panko bread crumbs
• 2 tablespoons butter or margarine, melted