Instructions

  1. Place hazelnuts in small nonstick skillet.
  2. Stir over medium heat until lightly toasted, about 8 minutes.
  3. Sprinkle with salt and set aside.
  4. Cook beans in large pot of boiling salted water until crisp-tender, about 4 minutes.
  5. Drain. (Can be made up to 2 hours ahead. Let beans stand in colander.).
  6. Melt butter in same pot over medium-high heat.
  7. Add beans and vinegar; toss to coat and heat through, about 2 minutes.
  8. Season with salt and pepper.
  9. Transfer to serving bowl.
  10. Sprinkle with hazelnuts.