GREEN BEANS WITH ROASTED ONIONS

Steps:

• Preheat oven to 450°F. 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.