Curl Each Shrimp And Secure With A Toothpick. Combine Broth, Butter, Garlic And Pepper. Simmer For 6 Minutes. Add Onion And Saute For 3 Minutes. Add Bread Crumbs And Cook For 5 Minutes. Let Cool, Add Sour Cream, Salt, Thyme And Tarragon. Stir Well. Place A Teaspoon Of The Onion Mixture On Top Of Each Curled Shrimp. Arrange On A Baking Dish. Cook In The Oven For 15 Minutes At 350 Degrees. Sprinkle With Parsley And Garnish With Lemon Wedges. Serve.