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Balsamic Onion Vol-au-Vents

Flaky puff pastry shells filled with rich caramelized balsamic onions, perfect for elegant appetizers and entertaining.
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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 12 pieces
Course: Dessert, Snack
Cuisine: American, Autumn
Calories: 180
Ingredients Equipment Method Notes

Ingredients
  

Pastry
  • 2 sheets puff pastry thawed
  • 1 egg for egg wash
  • 1 tbsp water
Filling
  • 3 large onions thinly sliced
  • 2 tbsp olive oil
  • 2 tbsp unsalted butter
  • 2 tbsp balsamic vinegar
  • 1 tsp brown sugar
  • 0.5 tsp salt to taste
  • 0.25 tsp black pepper
  • 1 tsp fresh thyme

Equipment

  • Mixing bowls
  • Baking sheet
  • Wire rack
  • Hand mixer or stand mixer

Method
 

  1. Preheat oven to 400°F (200°C). Cut puff pastry into circles and rings for shells.
  2. Assemble pastry shells with egg wash and bake 12–15 minutes until golden.
  3. Cook onions in butter and olive oil over medium heat for 20–25 minutes until caramelized.
  4. Add balsamic vinegar, sugar, salt, pepper, and thyme. Cook until glossy.
  5. Fill pastry shells with onion mixture and bake 5 minutes if desired.
  6. Garnish and serve warm.

Notes

You can add cheese like goat cheese or Gruyère for extra richness.