INGREDIENTS
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2 tablespoons olive oil
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1/4 teaspoon salt
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1/4 teaspoon freshly ground black pepper
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2 pounds sweet potatoes, scrubbed and cut into 1" chunks
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2 large red bell peppers, cut into 1" pieces
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2 tablespoons white balsamic or white wine vinegar
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1 pound spinach or arugula, torn into bite-size pieces