Seafood and Crab Bisque - Tony Chachere's

Ingredients

• 1/2 Cup Unsalted Butter (1 Stick)
• 2 Cups Onion, Chopped
• 2 Tablespoons Garlic, Minced
• 4 Tablespoons Tony’s White Gravy Mix
• 1 Can (15 1/4 Ounces) Creamed Corn
• 1 Can (10 1/2 Ounces) Cream of Potato Soup
• 2 Quarts Half-and-Half
• 1 Pint Heavy Cream
• 1 Pound Claw Crab Meat
• 1 Pound Small Shrimp, Peeled and Deveined
• 1 Pound Crawfish Tail Meat
• 1 Tablespoon Dry Sherry
• 2 Cups Swiss Cheese, Shredded
• 2 Tablespoons Tony’s Original Creole Seasoning
• 1 Tablespoon Green Onion, Chopped
• 1 Tablespoon Parsley, Chopped