Cauliflower and Caramelized Onion Tart (Lighter Version)

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READY IN: 1hr 20mins
SERVES: 8
UNITS: US

INGREDIENTS

Nutrition
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DIRECTIONS

  • Prepare a 9-inch-diameter tart pan with cooking spray.
  • Heat olive oil in heavy large skillet over medium heat. Add onion; sprinkle with salt and pepper. Cook until onion is deep golden brown, stirring occasionally, about 40 minutes. Cool slightly.
  • Preheat oven to 350°F.
  • Spread onion in pan. Arrange cauliflower over evenly. Set tart on rimmed baking sheet.
  • Whisk eggs and next 5 ingredients in medium bowl. Stir in Gruyère. Pour mixture over filling in tart pan; sprinkle with Parmesan. Bake until tart is golden and center is set, about 40 minutes.
  • Transfer to rack; cool 15 minutes before serving.
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