Ingredients

  • Nonstick vegetable oil spray
  • 6 medium onions (about 2 1/2 pounds), peeled, each cut vertically through root end into 12 to 14 wedges
  • 6 tablespoons (3/4 stick) butter
  • 2 cups canned low-salt chicken broth
  • 3 tablespoons sugar
  • 2 tablespoons red wine vinegar
  • 3 pounds slender green beans, ends trimmed

Method

  • Preheat oven to 450F.
  • Spray 2 heavy large baking sheets with vegetable oil spray.
  • Arrange onions in single layer on prepared sheets.
  • Dot onions with 4 tablespoons butter, dividing equally.
  • Season with salt and pepper.
  • Bake until onions are dark brown on bottom, about 35 minutes.
  • Meanwhile, boil broth in heavy large skillet over high heat until reduced to 1/2 cup, about 6 minutes.
  • Add sugar and vinegar and whisk until sugar dissolves and mixture comes to boil.
  • Add onions to sauce; reduce heat to medium-low.
  • Simmer until liquid is slightly reduced, about 5 minutes.
  • Season with salt and pepper.
  • (Can be prepared 1 day ahead.
  • Cover and refrigerate.
  • Rewarm over low heat before continuing.)
  • Cook green beans in large pot of boiling salted water until crisp-tender, about 5 minutes.
  • Drain well.
  • Return beans to same pot.
  • Add remaining 2 tablespoons butter and toss to coat.
  • Mound beans in large shallow bowl.
  • Top with onion mixture and serve.