1 c Butter or margarine, melted
3/4 c Lemon juice
3/4 c Worcestershire sauce
1 tb Salt
1 tb Coarsely ground pepper
1 ts Dried rosemary
1/8 ts Ground red pepper
1 tb Hot sauce
3 Garlic cloves, minced
2 1/2 lb Unpeeled large or jumbo shrimp
2 Lemons, thinly sliced
1 md Onion, thinly sliced
Fresh rosemary sprigs

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" baking dish. Pour butter mixture over shrimp.

Bake uncovered, at 400° for 20 to 25 minutes or until shrimp turn pink, basting occasionally with pan juices. Garnish with fresh rosemary sprigs, if desired.