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Caramelized Onion Tart with Gorgonzola and Brie Recipe

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This Caramelized Onion Tart with Gorgonzola and Brie is a savory pastry appetizer featuring deeply caramelized onions, creamy brie, sharp gorgonzola, and fragrant fresh tarragon. The puff pastry base is golden and crisp, making it an elegant yet simple dish perfect for entertaining or a flavorful snack.

  • Author: Chef
  • Prep Time: 10 mins
  • Cook Time: 50 mins
  • Total Time: 60 mins
  • Yield: 9 to 12 pieces
  • Category: Appetizer
  • Method: Baking
  • Cuisine: French-inspired
  • Diet: Vegetarian

Ingredients

For the Caramelized Onions

  • 2 tablespoons extra virgin olive oil
  • 4 cups sliced onions (about 2 to 3 medium onions), sliced root-to-top into 1/4-inch thick slices
  • 1 tablespoon brown sugar
  • 2 tablespoons balsamic vinegar
  • 1/2 teaspoon salt
  • 1/2 teaspoon pepper

For the Tart

  • 8 ounces (1 sheet) frozen puff pastry, defrosted
  • 2 ounces chilled brie cheese, rind removed and diced
  • 2 ounces gorgonzola or other blue cheese, diced
  • 2 tablespoons chopped fresh tarragon

Instructions

  1. Caramelize the Onions: Heat the olive oil in a large deep pan over medium-high heat. Add the sliced onions and cook for about 10 minutes, stirring occasionally, until the onions wilt and begin to brown. Stir in the brown sugar, balsamic vinegar, salt, and pepper. Reduce the heat to low and cook uncovered for 20 to 25 minutes, stirring periodically, until the onions are richly caramelized. Add a little water as needed if the onions start to dry out. Remove from heat and allow to cool.
  2. Preheat the Oven: Set your oven to 400°F (200°C) to get it ready for baking the tart.
  3. Prepare the Puff Pastry: Roll out the defrosted puff pastry into a 10-to-14-inch rectangle, or to your preferred shape. Transfer it onto a baking sheet lined with parchment paper and prick the pastry surface several times at 2-inch intervals with a fork to prevent large bubbles during baking.
  4. Assemble the Tart: Evenly spread the cooled caramelized onions over the entire surface of the puff pastry, reaching all the way to the edges. Dot the onions with the diced brie and gorgonzola cheeses. Sprinkle the chopped fresh tarragon evenly on top.
  5. Optional Refrigeration: If you are not baking immediately, place the assembled tart in the refrigerator to keep it fresh until baking.
  6. Bake the Tart: Bake in the preheated oven for 18 to 20 minutes, or until the cheese melts and the puff pastry is crisp and golden brown. Once done, remove from the oven and allow the tart to cool for 5 minutes.
  7. Serve: Cut the tart into wedges or squares and serve warm to enjoy the full flavors and textures.

Notes

  • If fresh tarragon is unavailable, substitute with crushed fennel seeds (about 1/2 teaspoon) sprinkled over the tart before baking.
  • Alternatively, garnish with fresh chopped fennel fronds after the tart comes out of the oven for a similar aromatic effect.
  • Use a sharp knife to cut the tart to prevent the puff pastry from compressing.
  • For a vegetarian option, ensure the cheeses used are made without animal rennet.

Find it online: https://cheftinaskitchen.com/caramelized-onion-tart-with-gorgonzola-and-brie-recipe/