• 6 Ingredients
  • 1 tablespoon butter
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  • 2 teaspoons olive oil, divided
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  • 2 medium red onions (about 10 ou...
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  • 2 large heads of Chioggia or Tre...
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  • 3 tablespoons balsamic vinegar
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  • Show all (6)
  • Nutrition 100% match
  • Calories per gram: 1.0
  • Total fat: High
  • Show all