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Baked Brie with Caramelized Onions Recipe

4 from 23 reviews

This elegant Baked Brie with Caramelized Onions pairs creamy, melted brie wrapped in flaky puff pastry with sweet and tangy balsamic caramelized onions, perfect for an impressive appetizer or cozy gathering.

Ingredients

Scale

Ingredients

  • Olive oil
  • 1 1/2 medium onions, sliced thinly into semi-circles (roughly 2 1/2 cups)
  • Salt
  • Black pepper
  • 1 teaspoon brown sugar (or granulated sugar)
  • 2 tablespoons balsamic vinegar
  • 1 teaspoon fresh thyme leaves, plus extra sprigs for garnish
  • 1 (8 ounce) wheel brie cheese, cold
  • 1 sheet prepared puff pastry, thawed according to package instructions
  • Flour, for rolling
  • 1 whisked egg, for egg wash
  • Crackers, sliced baguette, apples/pears, for serving on the side

Instructions

  1. Caramelize Onions: Place a large skillet over medium-high heat, and drizzle in about 2-3 tablespoons of oil; once hot, add in the sliced onions along with a pinch of salt and pepper, and cook the onions, stirring occasionally, until they become deeply golden-brown and caramelized, about 20 minutes.
  2. Reduce and Season Onions: Once golden, stir in the teaspoon of sugar, followed by the balsamic vinegar, and allow the mixture to bubble up and reduce, stirring to incorporate; allow the onions to cook for another 3-5 minutes, stirring frequently now, until jam-like and deeply browned; then, add the 1 teaspoon of thyme leaves, stir to combine, and remove from pan and allow to cool (you should have roughly 1/2 cup).
  3. Prepare Puff Pastry: To prepare the baked brie, lightly flour your work surface, and roll out the thawed puff pastry sheet to about 1/8” thickness, a bit larger than the wheel of brie (trim the puff pastry a little bit if it’s considerably too large for your brie); place the brie in the center of it, spoon over top of it the cooled, balsamic caramelized onions, then fold the puff pastry sheet over top to cover everything, creating a little “package” with pleats.
  4. Chill Wrapped Brie: Place the wrapped brie “package” onto a small baking sheet lined with parchment paper, and very gently brush some egg wash over the puff pastry (avoid allowing it to pool underneath), and place into the fridge to chill for 30 minutes (or even overnight), covering lightly with plastic wrap.
  5. Preheat Oven: Preheat the oven to 400°.
  6. Bake Brie: Once ready to bake, place the brie into the oven and bake for roughly 35-40 minutes, or until deeply golden and puffed; allow the baked brie to stand for 10 minutes before serving, to avoid it oozing out too much.
  7. Serve: To serve, add a couple of decorative sprigs of thyme, and surround the brie with crackers, sliced baguette, or even fruit such as apples or pears.

Notes

  • Chill the wrapped brie for at least 30 minutes or even overnight to ensure the puff pastry bakes evenly and holds its shape.
  • Allow the baked brie to rest for 10 minutes after baking to prevent too much oozing.

Keywords: Baked Brie, Caramelized Onions, Puff Pastry Appetizer, Elegant Cheese Appetizer, Holiday Cheese Bake