Description
This savory onion and mushroom tart combines caramelized onions, sautéed mushrooms, and creamy cheeses in a buttery, flaky crust. It’s elegant yet easy to prepare, making it perfect for brunch, dinner parties, or a light vegetarian main dish.
Ingredients
- 1 ¼ cups all-purpose flour
- ½ tsp salt
- 8 Tbsp (1 stick) unsalted butter, cold and cubed
- 3–4 Tbsp ice water
- 1 Tbsp olive oil
- 1 Tbsp unsalted butter
- 2 medium yellow onions, thinly sliced
- 2 Tbsp balsamic vinegar
- 1 tsp sugar
- 8 oz mushrooms (cremini or button), sliced
- Salt and freshly ground black pepper, to taste
- ¾ cup ricotta cheese
- ¼ cup grated Parmesan cheese
- 1 large egg
- 2 Tbsp heavy cream
- 2 Tbsp chopped chives or green onions, for garnish
Instructions
- In a bowl, whisk flour and salt. Cut in butter until mixture resembles coarse crumbs. Add ice water gradually until dough forms. Shape into a disk, wrap, and refrigerate for 30 minutes.
- On a floured surface, roll dough into an 11-inch circle. Fit into a 9-inch tart pan. Prick with a fork, line with parchment, and fill with weights. Bake at 375°F (190°C) for 15 minutes, remove weights, and bake 5 more minutes. Let cool.
- In a skillet, heat olive oil and butter. Add onions and cook 15 minutes until soft and golden. Stir in balsamic vinegar and sugar, cook 5 more minutes until jammy. Season and set aside.
- In the same skillet, sauté mushrooms over medium-high heat for 10 minutes until browned and dry. Season lightly and let cool.
- In a bowl, mix ricotta, Parmesan, egg, and cream until smooth. Stir in onions and mushrooms. Taste and adjust seasoning.
- Pour filling into tart shell, smooth top, and sprinkle with chives.
- Bake tart at 375°F (190°C) for 25–30 minutes until filling is set and top is golden.
- Cool 10–15 minutes before slicing. Serve warm or at room temperature.
Notes
- Dough can be made ahead and chilled up to 2 days, or frozen for a month.
- Use store-bought pastry for a shortcut.
- For more flavor, add fresh herbs like thyme or rosemary to the filling.
- Refrigerate leftovers for up to 4 days, or freeze baked slices for a month.
- Reheat in a 325°F oven for best results—avoid microwaving.
- Prep Time: 45 minutes
- Cook Time: 35 minutes
- Category: Main Dish
- Method: Baked
- Cuisine: European
Nutrition
- Serving Size: 1 slice (1/8 tart)
- Calories: 280
- Sugar: 4 g
- Sodium: 280 mg
- Fat: 19 g
- Saturated Fat: 11 g
- Unsaturated Fat: 7 g
- Trans Fat: 0 g
- Carbohydrates: 22 g
- Fiber: 2 g
- Protein: 7 g
- Cholesterol: 60 mg
