Mussel Gratin

Ingredients

• 1/4 cup olive oil
• 2 shallots, diced
• 4 cloves of garlic, chopped
• 6 pounds mussels, cleaned
• 1/2 cup dry white wine
• 2 cups whipping cream
• 6 tablespoons chopped fresh parsley, divided
• 1 tablespoon chopped fresh thyme
• 1 teaspoon lemon zest
• 3 cups panko crumbs
• 1/2 cup butter, melted
• 1 cup Asiago cheese, freshly grated
• salt and pepper to taste