"A healthy, one-skillet vegetable side. Make it vegan by using vegetable broth...."
INGREDIENTS
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5 tablespoons extra-virgin olive oil
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1 medium onion, halved and thinly sliced (2 cups)
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1 1/2 pounds green beans, trimmed and halved crosswise on the bias
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1 can (28 ounces) whole peeled tomatoes, drained and coarsely chopped (2 cups)
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1 cup low-sodium chicken or vegetable broth
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2 tablespoons coarsely chopped fresh oregano leaves
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Kosher salt and freshly ground pepper