If you are craving a dish that perfectly balances sweet, salty, and savory flavors all in one delightful bite, then the Sweet Potato, Feta & Caramelised Onion Tart Recipe is your new best friend in the kitchen. This tart brings together tender roasted sweet potatoes, creamy tangy feta, and deeply flavorful caramelised onions, all nestled within a crisp, buttery puff pastry crust. It’s both elegant and comforting, making it perfect for casual family dinners or impressing friends at your next gathering. The harmony of colors, textures, and tastes makes this tart absolutely unforgettable.
Ingredients You’ll Need
This recipe calls for simple, everyday ingredients that come together to create a dish that’s anything but ordinary. Each element adds its own special touch, from the sweetness of the potatoes to the saltiness of the feta, rounded out by the richness of caramelised onions and the light puff pastry crust.
- Puff pastry sheet: The flaky base that gives the tart its signature lift and crunch.
- Sweet potatoes (2 medium): Thinly sliced for even roasting and a sweet, earthy flavor.
- Olive oil (1 tbsp): Coats the sweet potato slices, helping them roast to golden perfection.
- Salt and black pepper: Essential for seasoning and enhancing all the flavors.
- Large onion (1): Thinly sliced and slowly caramelised for deep, sweet richness.
- Butter (1 tbsp): Adds creaminess to the onions as they caramelise.
- Brown sugar (1 tsp): Helps the onions develop that irresistible golden glaze.
- Feta cheese (4 oz): Crumbled and sprinkled on top, it injects a tangy, salty punch.
- Fresh thyme leaves (1 tsp): Provides a subtle herbal note to balance the flavors.
- Egg (1, beaten): For brushing the pastry edges to create a shiny, golden finish.
How to Make Sweet Potato, Feta & Caramelised Onion Tart Recipe
Step 1: Roast the Sweet Potatoes
Begin by preheating your oven to 400°F (200°C) and lining a baking sheet with parchment paper. Toss the thinly sliced sweet potatoes with olive oil, salt, and pepper, making sure each slice is evenly coated. Spread them out in a single layer on the tray and roast for 20 minutes until tender and edges start to crisp slightly. This roasting step unlocks their natural sweetness while softening them perfectly for the tart.
Step 2: Caramelise the Onions
While the potatoes roast, melt butter in a skillet over medium heat. Add the thinly sliced onions and cook slowly, stirring frequently so they soften but don’t burn. After about 10 minutes, sprinkle the brown sugar over the onions and continue to cook for another 5 minutes until they become a beautiful golden brown and sweetly caramelised. This adds rich depth to the tart’s flavor.
Step 3: Prepare the Puff Pastry Base
On a lightly floured surface, roll out your thawed puff pastry slightly to smooth any creases, then place it on a parchment-lined baking sheet. Using a knife, gently score a 1-inch border around the edges without cutting all the way through. This scoring lets the edges puff up nicely while keeping the center flat for the filling.
Step 4: Assemble the Tart
Spread the caramelised onions evenly inside the scored border on the puff pastry. Next, arrange the roasted sweet potato slices over the onions in an overlapping pattern for a beautiful presentation. Sprinkle the crumbled feta cheese evenly on top and scatter fresh thyme leaves for an aromatic touch.
Step 5: Bake to Golden Perfection
Brush the pastry border generously with the beaten egg to achieve a golden, glossy finish once baked. Place the tart in the preheated oven and bake for 20 to 25 minutes or until the pastry has puffed and turned a rich golden brown. Once out of the oven, allow it to cool slightly before slicing to keep the filling intact and flavors melded.
How to Serve Sweet Potato, Feta & Caramelised Onion Tart Recipe
Garnishes
A handful of fresh herbs like parsley, extra thyme, or even a sprinkle of chili flakes can add a lively finish to this tart, brightening the warmth of the sweet potato and the creaminess of feta. A drizzle of good quality olive oil or a squeeze of fresh lemon juice just before serving works wonders for an extra burst of flavor.
Side Dishes
This tart shines alongside a crisp green salad tossed with a tangy vinaigrette or a bowl of roasted seasonal vegetables. For cooler days, pair it with a warm bowl of soup—like roasted tomato or butternut squash—to create a comforting and complete meal that satisfies every craving.
Creative Ways to Present
For a stunning brunch or appetizer spread, cut the tart into smaller squares or rectangles and serve with toothpicks. You can also jazz it up by adding a dollop of herbed yogurt or crème fraîche on the side for dipping. It looks as beautiful as it tastes, making it a real conversation starter at your table.
Make Ahead and Storage
Storing Leftovers
The tart keeps well in an airtight container in the fridge for up to 3 days. The flavors continue to develop, making leftovers even tastier. To enjoy, bring it back to room temperature or gently warm it in the oven to refresh the crisp pastry.
Freezing
This tart freezes nicely before baking. Simply assemble it as per the recipe, cover with plastic wrap and foil, then freeze for up to 2 months. When ready, bake it straight from frozen—just add a few extra minutes to the baking time until the pastry is golden and cooked through.
Reheating
Reheat in a 350°F (175°C) oven for about 10 to 15 minutes to restore the pastry’s crispness and melt the cheese slightly. Avoid microwaving if you want to keep that flaky texture intact.
FAQs
Can I use a different type of cheese instead of feta?
Absolutely! While feta provides a distinctive tang and crumbly texture, goat cheese or ricotta also pair beautifully with sweet potatoes and caramelised onions for a milder, creamier experience.
Is this tart gluten-free?
The traditional recipe uses puff pastry which contains gluten, but you can substitute with a gluten-free puff pastry available in many grocery stores to make this dish gluten-friendly.
How thin should the sweet potato slices be?
Around 1/8 inch thick is ideal. Thin slices roast evenly and become tender without drying out, ensuring each bite is soft and flavorful.
Can I prepare the caramelised onions in advance?
Yes! Caramelised onions keep well in the fridge for up to 3 days and actually taste better as the flavors develop over time. Just reheat gently before assembling your tart.
What can I substitute for fresh thyme?
Dried thyme will work in a pinch, though use about half the amount to avoid overpowering the dish. Fresh rosemary or oregano can also provide nice herbal notes if you want to experiment.
Final Thoughts
This Sweet Potato, Feta & Caramelised Onion Tart Recipe is truly a joy to make and an absolute delight to eat. It’s a wonderful combination of sweet, savory, and tangy all in one gorgeous package. Whether you’re cooking for a crowd or treating yourself to something special, this tart will quickly become a favorite in your recipe rotation. Give it a try—you won’t regret it!
Print
Sweet Potato, Feta & Caramelised Onion Tart Recipe
- Prep Time: 20 minutes
- Cook Time: 40 minutes
- Total Time: 1 hour
- Yield: 6 servings
- Category: Appetizer
- Method: Baking
- Cuisine: Mediterranean
- Diet: Vegetarian
Description
This Sweet Potato, Feta & Caramelised Onion Tart combines tender roasted sweet potatoes with rich caramelized onions and tangy feta cheese, all nestled in a flaky puff pastry crust. Perfect as a savory appetizer or a light meal, this tart offers a delightful blend of sweet and savory flavors with a hint of fresh thyme for an aromatic finish.
Ingredients
Pastry
- 1 sheet puff pastry, thawed
Sweet Potato
- 2 medium sweet potatoes, peeled and sliced thin
- 1 tbsp olive oil
- Salt and black pepper, to taste
Caramelised Onions
- 1 large onion, thinly sliced
- 1 tbsp butter
- 1 tsp brown sugar
Topping
- 4 oz feta cheese, crumbled
- 1 tsp fresh thyme leaves
- 1 egg, beaten (for egg wash)
Instructions
- Preheat Oven: Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper to prevent sticking and for easier cleanup.
- Roast Sweet Potatoes: Toss the thinly sliced sweet potatoes in olive oil, salt, and black pepper. Spread them on the lined baking sheet and roast for about 20 minutes until tender. Once done, set aside to cool slightly.
- Caramelize Onions: In a skillet over medium heat, melt butter and add the sliced onions. Cook them slowly until soft, then sprinkle brown sugar and continue cooking until golden and caramelized, approximately 15 minutes. Remove from heat and set aside.
- Prepare Puff Pastry: On a lightly floured surface, gently roll out the puff pastry slightly larger than its original size. Transfer it to the baking sheet and use a knife to score a 1-inch border around the edges, being careful not to cut through the dough.
- Assemble Tart: Spread the caramelized onions evenly inside the scored border. Arrange the roasted sweet potato slices on top of the onions. Sprinkle crumbled feta cheese and fresh thyme leaves evenly over the tart.
- Egg Wash and Bake: Brush the exposed pastry border with the beaten egg to give it a golden shine while baking. Place the tart in the preheated oven and bake for 20 to 25 minutes, or until the pastry is puffed up and golden brown.
- Serve: Allow the tart to cool slightly before slicing. Serve warm or at room temperature for the best flavor experience.
Notes
- Make sure to slice the sweet potatoes thinly for even roasting.
- Caramelizing onions slowly enhances their sweetness and depth of flavor.
- Scoring the pastry border helps it rise and creates a neat edge for fillings.
- Using freshly crumbled feta adds texture and a creamy tanginess to the tart.
- This tart can be served as a light lunch, appetizer, or along with a fresh leafy salad.
