2tspbalsamic vinegarplus more for drizzling, if desired
0.75tspkosher saltdivided
0.5tspfreshly ground black pepper
6ozsoft goat cheeseroom temperature
1tspfresh thyme leaves, choppeddivided
3tbspbeaten eggfor egg wash
1tbspwaterto loosen egg wash
1tbspall-purpose flourfor dusting
1tsphoneyoptional drizzle
Instructions
Preparation Steps
Heat oven to 400°F. Line a baking sheet with parchment.
Warm olive oil and butter in a large skillet over medium heat.
Add onions and 1/2 teaspoon salt. Cook, stirring occasionally, until deeply golden, 25–30 minutes.
Stir in brown sugar and balsamic. Cook 2 minutes to glaze. Add pepper and half the thyme.
Lightly flour the counter. Roll puff pastry to smooth seams and slightly enlarge.
Cut pastry into eight squares. Transfer to the sheet and dock centers with a fork.
Whisk egg with water. Brush pastry borders, avoiding the centers.
Crumble goat cheese onto centers. Spoon a mound of onions over the cheese.
Bake until puffed and deeply golden, 18–22 minutes.
Rest 5 minutes. Sprinkle remaining thyme and drizzle honey or extra balsamic. Serve warm.
Notes
Variation: Add a few thinly sliced figs or pear to the onions during the last 5 minutes for a fruity note. Storage: Reheat leftovers at 350°F for 8–10 minutes to re-crisp the pastry.This recipe is an original creation inspired by classic Delicious Caramelized Onion and Goat Cheese Tarts flavors. All ingredient ratios and instructions are independently developed.