Dry shrimp and dust with flour. Put butter and olive oil in a flat baking dish and heat under a low broiler until butter is melted. Place shrimp in baking dish and broil under low heat for 10 minutes. Add garlic and parsley to the Butter Sauce. Pour over broiled shrimp and stir until shrimp are well coated. Return to broiler and broil under high heat for 2 to 3 minutes longer. Serve immediately.
2.
FOR THE BUTTER SAUCE: Bring all ingredients except last butter to a boil, stirring constantly, and cook for 5 minutes. Add the butter and stir until melted.
