In same skillet, heat 1 tablespoon of the butter over medium heat. Cook shrimp, salt and pepper in butter 1 to 2 minutes, turning once, just until shrimp start to turn pink. Stir in broth and 1 tablespoon of the butter. Stir in vegetable mixture. Spoon cooked orzo into baking dish. Spoon shrimp mixture over orzo.