Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      cup           butter or margarine -- melted
     3/4  cup           lemon juice
     3/4  cup           Worcestershire sauce
   1      tablespoon    salt
   1      tablespoon    coarsely ground pepper
   1      teaspoon      dried rosemary
     1/8  teaspoon      ground red pepper
   1      tablespoon    hot sauce
   3                    garlic cloves -- minced
   2 1/2  pounds        unpeeled large or jumbo -- shrimp
   2                    lemons -- thinly sliced
   1      medium        onion -- thinly sliced
                        fresh rosemary sprigs

Preparation:

Combine first 9 ingredients in a small bowl; set aside. Rinse shrimp with cold water; drain well. Layer shrimp, lemon slices, and onion slices in an ungreased 13x9x2-inch baking dish. Pour butter mixture over shrimp. Bake uncovered, at 400F for 20 to 25 minutes or until shrimp turn pink, basting occasionally with pan juices. Garnish with fresh rosemary sprigs, if desired.