
This savoury tart recipe combines sweet caramelised onions, tender squash, and rich Gruyère cheese for a truly satisfying dish. Perfect for brunch or a light dinner, this recipe is an excellent addition to your collection of UK recipes that impress without much fuss.
Picture this: a flaky pastry shell filled with a golden mixture of caramelised onions and squash, topped with melted Gruyère cheese. It’s the kind of dish that makes your kitchen smell amazing and your taste buds sing.
Whether you’re entertaining guests or simply treating yourself to a cozy night in, this tart is bound to delight. Serve it warm with a fresh salad on the side for a balanced meal that feels indulgent.
Delicious Caramelised Onion, Squash, and Gruyère Tart

This tart features a buttery pastry crust filled with sweet caramelised onions, nutty roasted squash, and creamy Gruyère cheese.
The combination creates a dish that’s rich and flavorful, with a slightly sweet undertone from the squash and onions.
Ingredients
- 1 sheet of ready-made puff pastry
- 2 medium onions, thinly sliced
- 1 medium butternut squash, peeled and diced
- 1 cup Gruyère cheese, grated
- 2 tablespoons olive oil
- 1 tablespoon balsamic vinegar
- Salt and black pepper to taste
- Fresh thyme leaves for garnish (optional)
Instructions
- Preheat the Oven: Preheat your oven to 200°C (392°F).
- Cook the Squash: In a baking tray, toss the diced squash with olive oil, salt, and pepper. Roast in the oven for about 25 minutes or until tender.
- Caramelise the Onions: In a skillet, heat 1 tablespoon of olive oil over medium heat. Add the sliced onions and a pinch of salt, sautéing for about 15-20 minutes until they turn golden brown and caramelised. Stir in the balsamic vinegar at the end.
- Assemble the Tart: Roll out the puff pastry and place it on a baking tray. Spread the caramelised onions evenly over the pastry, then add the roasted squash on top. Finally, sprinkle the grated Gruyère cheese over everything.
- Bake: Bake the tart in the oven for 25-30 minutes, or until the pastry is golden and the cheese is bubbling.
- Serve: Garnish with fresh thyme leaves if desired, slice, and serve warm.
Cook and Prep Times
- Prep Time: 20 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour 5 minutes
Nutrition Information
- Servings: 4 slices
- Calories: 350kcal
- Fat: 22g
- Protein: 10g
- Carbohydrates: 30g
More Savoury Tart Recipes You’ll Love to Try
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This curried cauliflower and chickpea tart is a delightful twist on your usual savory options. The combination of spices with the creamy texture of chickpeas creates a dish that’s both satisfying and full of flavor. Perfect for lunch or a light dinner, it’s sure to impress your guests!
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