2 lbs. lg. shrimp, unpeeled
1/2 c. butter
1/2 c. olive oil
1/4 c. fresh parsley, snipped
1 tbsp. minced green onion
3 cloves garlic, minced
1 1/2 tbsp. lemon juice
Coarsely ground black pepper

Peel shrimp, leaving tails on; devein and butterfly. Combine all ingredients except shrimp in large shallow dish. Add shrimp, tossing well to coat. Cover and marinate for 1 hour, stirring occasionally. Cook on heavy duty foil on grill with marinade until pink, 6 to 8 minutes, tossing occasionally.