Introduction

This caramelized onion butternut squash tart is a perfect blend of sweet and savory flavors with a flaky puff pastry crust. It’s an elegant yet simple dish that works well as a light dinner or a festive appetizer. The combination of roasted squash, caramelized onions, and creamy goat cheese makes every bite delightful.

The image shows a square tart with a golden brown puff pastry crust that is thick and flaky, with crimped edges rising around the sides. Inside, the tart has visible layers of roasted orange butternut squash chunks, large caramelized onion slices that are browned with a slightly crispy texture on top, and dollops of creamy white goat cheese scattered evenly. There are small green sprigs of fresh thyme sprinkled across the top, adding a touch of color contrast to the warm tones of the vegetables and cheese. The tart sits on a wooden board placed on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

1 sheet of puff pastry (store-bought or homemade)
2 medium butternut squashes (about 2 lbs), peeled and diced
2 large onions, thinly sliced
2 tablespoons olive oil
1 teaspoon salt
1/2 teaspoon black pepper
1 teaspoon fresh thyme (or 1/2 teaspoon dried thyme)
1 cup goat cheese (or feta cheese for a tangier flavor)
1/4 cup heavy cream (or a dairy-free alternative)
1 egg (for egg wash)
Optional: A sprinkle of red pepper flakes for heat

Instructions

Step 1: Preheat your oven to 400°F (200°C).
Step 2: Toss the diced butternut squash with 1 tablespoon olive oil, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Spread it evenly on a baking sheet and roast for 25-30 minutes until tender and slightly caramelized.
Step 3: While the squash roasts, heat the remaining 1 tablespoon olive oil in a skillet over medium heat. Add the sliced onions and cook for about 20 minutes, stirring occasionally, until they turn golden brown and caramelized.
Step 4: On a floured surface, roll out the puff pastry to fit your tart pan. Transfer it to the pan and prick the bottom with a fork to prevent puffing.
Step 5: Spread the caramelized onions evenly over the pastry base. Layer the roasted butternut squash on top, then crumble the goat cheese evenly over the tart.
Step 6: Drizzle the heavy cream over the ingredients and sprinkle with thyme. Add red pepper flakes if using. Brush the exposed edges of the pastry with beaten egg for a golden finish.
Step 7: Bake the tart in the preheated oven for 25-30 minutes until the crust is golden brown and crisp.
Step 8: Remove from the oven and let cool for 10 minutes before slicing and serving.

Tips & Variations

Use feta cheese instead of goat cheese for a tangier, bolder flavor.
Add a handful of toasted walnuts or pecans on top for extra crunch and nuttiness.
Swap fresh thyme for rosemary if you prefer a more piney, aromatic herb.
For a vegan version, use dairy-free cream and a plant-based cheese alternative, and skip the egg wash or brush with a little olive oil.

Storage

Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat slices gently in a 350°F (175°C) oven for 10-15 minutes to restore crispness. Avoid microwaving to keep the crust flaky.

How to Serve

A square tart with a golden, crispy crust has three main visible layers: the bottom crust is thick and flaky with a rich golden brown color and crimped edges; the middle layer is filled with vibrant orange roasted cubes, likely squash or sweet potato, adding bright color and a soft texture; on top, large round slices of caramelized onions are browned with a slightly crisp edge, sprinkled with dollops of creamy white cheese and small green herb sprigs that add freshness and contrast. The tart sits on a wooden board with a blurred white marbled texture background. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I prepare the tart ahead of time?

Yes, you can assemble the tart a few hours before baking and keep it covered in the refrigerator. Bring it to room temperature before baking to ensure even cooking.

What can I use instead of puff pastry?

If you don’t have puff pastry, you can use a shortcrust pastry or even a ready-made pie crust. Keep in mind the texture and cooking times may vary slightly.