Caramelized Onion Goat Cheese Tarts (Print View)

Buttery pastry shells filled with slowly caramelized onions and creamy goat cheese for an elegant French appetizer.

# Ingredient List:

→ Pastry Base

01 - 1 sheet (approximately 17.3 oz) puff pastry, thawed if frozen

→ Caramelized Onions

02 - 3 large yellow onions, thinly sliced
03 - 2 tablespoons unsalted butter
04 - 1 tablespoon olive oil
05 - 1/2 teaspoon salt
06 - 1/4 teaspoon freshly ground black pepper
07 - 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried thyme)
08 - 1 teaspoon granulated sugar

→ Cheese & Garnish

09 - 5.3 oz goat cheese, crumbled
10 - 1 large egg, beaten for egg wash
11 - 1 tablespoon fresh chives or parsley, finely chopped

# How to Make:

01 - Preheat oven to 400°F. Line a rimmed baking sheet with parchment paper.
02 - Melt butter with olive oil in a large skillet over medium-low heat. Add sliced onions, salt, and sugar. Cook, stirring frequently, for 25–30 minutes until onions are deep golden brown and caramelized. Stir in thyme and black pepper during the final 5 minutes of cooking.
03 - Unroll thawed puff pastry and cut into 6 equal rectangles. Transfer to prepared baking sheet. Using a sharp knife, score a 1/2-inch border around each rectangle, taking care not to cut completely through the dough.
04 - Brush the scored edges of each pastry rectangle with beaten egg.
05 - Distribute caramelized onions evenly within the scored borders of each pastry rectangle. Top generously with crumbled goat cheese.
06 - Bake for 15–18 minutes until pastry is puffed, golden brown, and crisp, with cheese melted and slightly bubbly.
07 - Remove from oven and sprinkle with fresh chives or parsley if using. Serve warm or at room temperature.

# Expert Advice:

01 -
  • The contrast between the sweet slow cooked onions and sharp creamy goat cheese hits every craving at once
  • Store bought puff pastry makes you look like you spent hours on something that came together in minutes
  • These tarts manage to feel fancy enough for a dinner party but casual enough for Tuesday night snacking
02 -
  • Low and slow is non negotiable for the onions or you will end up with burned bitter strings instead of sweet jammy ones
  • Scoring the pastry border without cutting through is what creates that professional restaurant look
  • The tarts are best served warm but they still taste incredible at room temperature so do not stress about timing
03 -
  • Use a mandoline if you want perfectly even onion slices but a sharp knife and steady hand work just fine
  • Space the pastry rectangles at least two inches apart on the baking sheet so they puff properly without touching
  • If the edges brown too quickly tent with foil for the last few minutes of baking

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