Description
Buttery, flaky, and deeply savory-sweet—this Caramelized Onion Tart is a simple yet stunning Thanksgiving side or appetizer. With golden puff pastry, melty Gruyère, and rich caramelized onions, every bite is comfort food elegance.
Ingredients
2 large onions, thinly sliced
2 tbsp butter
1 sheet puff pastry, thawed
½ cup shredded Gruyère cheese
Fresh thyme (for garnish)
Optional twist: drizzle of balsamic glaze or a sprinkle of crumbled goat cheese
Instructions
Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper.
In a skillet over medium heat, melt butter. Add onions and cook slowly, stirring often, until deeply golden and caramelized—about 25–30 minutes.
While onions cook, roll out puff pastry slightly and place on baking sheet. Score a ½-inch border around the edges with a knife (don’t cut all the way through).
Prick the center with a fork to prevent puffing.
Spread caramelized onions evenly over the center of the pastry. Top with shredded Gruyère.
Bake for 18–22 minutes, or until pastry is puffed and golden.
Garnish with fresh thyme and optional toppings. Slice and serve warm.
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Category: Dinner, Main Course
Nutrition
- Calories: 230
- Fat: 14g
- Carbohydrates: 20g
- Protein: 6g