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Brie and raspberry crostini arranged on a wooden board with caramelized onion compote and fresh thyme garnish

Brie & Raspberry Caramelized Onion Crostini

Elegant brie and raspberry crostini made with jammy caramelized onions, creamy brie, fresh thyme, and an optional drizzle of hot honey. A simple yet elevated sweet-and-savory appetizer perfect for entertaining, holidays, or wine nights. Ingredients
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Total Time 1 hour
Servings: 15 -20 crostini
Course: Appetizer, lunch, Snack
Cuisine: American, French
Ingredients Method Notes

Ingredients
  

For the crostini
  • 1 baguette sliced on the diagonal
  • 6 –8 oz brie cheese sliced
  • Fresh thyme leaves for garnish
  • Hot honey optional
For the raspberry caramelized onion compote
  • 1 tablespoon butter
  • 1 large red onion thinly sliced
  • 6 oz fresh raspberries
  • ¼ cup sugar
  • 1 tablespoon balsamic vinegar
  • Pinch of salt

Method
 

  1. Heat the butter in a wide skillet over low heat. Add the sliced onion and cook slowly, stirring occasionally, until very soft and lightly caramelized, about 30 minutes. Do not rush this step—the slow cooking develops sweetness and depth.
  2. Add the raspberries, sugar, balsamic vinegar, and salt to the pan. Stir gently and continue cooking over low heat for about 20 minutes, until the raspberries break down and the mixture thickens into a glossy, jam-like compote.
  3. Remove the compote from heat and let it cool slightly until warm but not hot.
  4. While the compote cools, toast the baguette slices until lightly golden and crisp.
  5. To assemble, spoon a small amount of the warm raspberry onion compote onto each crostini. Top with a slice of brie.
  6. Finish with a light drizzle of hot honey, if using, and garnish with fresh thyme leaves. Serve immediately.

Notes

  • The raspberry onion compote can be made up to 3 days ahead and stored in an airtight container in the refrigerator. Reheat gently before assembling.
  • For best texture, assemble the crostini just before serving to keep the bread crisp.
  • Frozen raspberries can be used if fresh are unavailable; thaw and drain before adding to the pan.

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