Shrimp Scampi Pasta Recipe

In large sauce pan, heat oil over medium heat. Add onion, cover, and cook until soft, about 6 minutes. Add garlic and cook for 1 minute. Pour 1 cup broth and flour into jar with tight fitting lid and shake to blend. Pour remaining broth and broth flour mixture into sauce pan, bring to a boil whisking constantly. Reduce heat, and simmer for 5 minutes. Stir in shrimp and cook 3 minutes more. Stir in lemon juice, butter and parsley. Pour over cooked pasta.