Preheat oven to 425 degrees
Peel, devein and butterfly the shrimp leaving the tails on. Place the shrimp in a mixing bowl and toss gently with the olive oil, wine, 2 teaspoons salt and 1 teaspoon pepper. Allow to sit at room temperature while you make the butter and garlic mixture.
In a small, mash the softened butter with the garlic, shallots, parsley, rosemary, red pepper flakes, lemon zest, lemon juice, egg yolk and panko, 1/2 teaspoon salt and 1/4 teaspoon pepper until combined.
Starting from the outer edge of a 14 inch oval gratin dish, arrange the shrimp in a single layer cut side down with the tails curling up toward the center of the dish. Pour the remaining marinade over the shrimp. Spread the butter mixture even.y over the shrimp. Bake for 10-12 minutes until hot and bubbly. If you like the top browned, place under a broiler for 1 minute. Serve with lemon wedges.
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