Bring a generous amount of lightly salted water to the boil in a large saucepan or soup pot. Plunge the beans into the boiling water and cook for 3 minutes. Drain in a colander and shake dry.
In a large heavy skillet heat the butter over medium high heat. Add the onion and cook, stirring frequently, for 3 to 4 minutes, or until softened. Add the garlic and cook, stirring, for 2 minutes. Add the rosemary and basil and stir together for 1 minute more. Add the beans and cook for 2 to 3 minutes, until they are just tender and coated with the onion butter.
c.1997, M.S. Milliken & S. Feniger, all rights reserved