Description
A rustic French Onion Galette filled with deeply caramelized onions and rich gruyère cheese in a flaky, buttery crust. Perfect as a vegetarian main, appetizer, or brunch centerpiece.
Ingredients
2 tablespoons unsalted butter
2 tablespoons olive oil
4 large yellow onions, thinly sliced
1/2 teaspoon salt
1 teaspoon fresh thyme leaves
1 tablespoon balsamic vinegar
1 sheet pie dough or homemade galette dough
1/2 cup grated gruyère cheese
1 egg, beaten (for egg wash)
Fresh cracked black pepper
Fresh thyme, for garnish
Instructions
- Heat the butter and olive oil in a large skillet over medium-low heat.
- Add the sliced onions and salt. Cook slowly, stirring occasionally, for 35 to 45 minutes until golden and deeply caramelized.
- Stir in the thyme leaves and balsamic vinegar. Cook for an additional 2–3 minutes, then remove from heat and let cool slightly.
- Preheat the oven to 400°F (200°C).
- Roll out the dough into a rough 12-inch circle on a parchment-lined baking sheet.
- Spread the caramelized onions over the dough, leaving a 2-inch border.
- Sprinkle the grated gruyère cheese evenly over the onions.
- Fold the dough edges over the filling, pleating as necessary to form a rustic shape.
- Brush the crust with beaten egg and season with cracked black pepper.
- Bake for 30–35 minutes or until the crust is golden brown and crisp.
- Cool for 5–10 minutes, garnish with fresh thyme, and serve.
Notes
Use a mix of red and yellow onions for a sweeter, more colorful variation.
For added richness, add a spoonful of crème fraîche before the cheese.
Substitute gruyère with blue cheese or fontina for a bold flavor twist.
Can be served warm or at room temperature; both are delicious.
Reheat in the oven for a crisp crust; avoid freezing for best texture.
- Prep Time: 20 minutes
- Cook Time: 45 minutes
- Category: Main Course
- Method: Baking
- Cuisine: French
Nutrition
- Serving Size: 1 slice
- Calories: 320 kcal
- Sugar: 5 g
- Sodium: 300 mg
- Fat: 22 g
- Saturated Fat: 10 g
- Unsaturated Fat: 10 g
- Trans Fat: 0 g
- Carbohydrates: 25 g
- Fiber: 2 g
- Protein: 6 g
- Cholesterol: 55 mg
