Grape tomatoes are small and have a sweet flavor like summer tomatoes. Look for them at your local supermarket.
Cook beans in boiling salted water 8 minutes or until crisp-tender; drain. Plunge into ice water to stop the cooking process; drain and set aside.
Melt butter in a large skillet over medium heat 6 to 7 minutes or until butter begins to brown. Add green beans, and sauté until tender. Stir in grape tomatoes and remaining ingredients. Serve immediately.