In a small saucepan, bring broth to a boil. Stir in rice; cover and remove from the heat. Let stand for 5 minutes. , Meanwhile, in a large cast-iron or other heavy skillet, cook shrimp and onions in butter and oil over medium heat until shrimp turn pink, 4-5 minutes. Add garlic; cook 1 minute longer. Stir in lemon juice and pepper. , Stir cheese and parsley into rice; serve with shrimp.