Description
French Onion Tarte Tatin is a savory puff pastry tart with deeply caramelized onions, balsamic vinegar, and Gruyère cheese, baked to golden perfection. This elegant French-inspired dish is perfect as a vegetarian main course, appetizer, or side dish.
Ingredients
Scale
Onions:
- 4 large yellow onions (thinly sliced)
Caramelized Onions:
- 2 tablespoons unsalted butter
- 1 tablespoon olive oil
- 1 tablespoon balsamic vinegar
- 1 tablespoon brown sugar
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried)
Assembly:
- 1 sheet puff pastry (thawed)
- 1/2 cup grated Gruyère cheese (optional)
- Fresh thyme or microgreens for garnish (optional)
Instructions
- Preheat the oven: Preheat the oven to 400°F (200°C).
- Caramelize Onions: Cook onions with butter and olive oil until caramelized. Stir in balsamic vinegar, sugar, salt, pepper, and thyme.
- Prepare Baking Dish: Grease a baking dish and spread caramelized onions. Add Gruyère if desired.
- Assemble Tarte: Cut puff pastry, lay over onions, and bake until golden and crisp.
- Finish: Cool, invert onto a plate, garnish, and serve.
Notes
- Perfect as a vegetarian main, appetizer, or side dish.
- Make caramelized onions ahead and assemble before baking.
- For extra richness, add white wine during caramelizing.
Nutrition
- Serving Size: 1 slice
- Calories: 280
- Sugar: 7g
- Sodium: 260mg
- Fat: 18g
- Saturated Fat: 8g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 24g
- Fiber: 2g
- Protein: 4g
- Cholesterol: 15mg
