Party Food All-Star: The Ultimate Gulf Blue Crab Gratin

Ingredients

• 2 pounds jumbo lump Gulf blue crab meat
• 1 cup (2 sticks) butter
• 1 1/2 cups onions
• 1 cup celery
• 1 cup green peppers
• 1 1/2 cups flour
• 1 cup white wine
• 2 cups milk
• 2 cups heavy cream
• 2 cups white cheddar cheese
• 2 cups Parmesan cheese
• 1/2 cup parsley
• 2 tablespoons lemon juice
• 2 teaspoons tabasco sauce
• 1 teaspoon worcestershire sauce
• 4 teaspoons Creole seasoning
• 1/2 teaspoon nutmeg
• salt
• ground white pepper
• 1 cup green onions
• 2 cups panko bread crumbs
• 2 loaves French bread