A golden, flaky puff pastry tart layered with sweet roasted butternut squash, rich caramelized onions, tangy blue cheese, and crunchy walnuts—this Butternut Squash, Blue Cheese & Walnut Tart is an elegant yet rustic dish perfect for fall gatherings, brunches, or a cozy dinner with a green salad on the side.

Why You’ll Love This Recipe

This tart offers a delightful mix of flavors and textures in every bite. The sweetness of roasted squash pairs beautifully with savory onions, while the boldness of blue cheese adds depth and the walnuts bring a nutty crunch. It’s visually appealing, easy to assemble, and makes for a versatile dish that’s ideal as a main course, side, or appetizer. Plus, it can be served warm or at room temperature, making it perfect for entertaining.

Ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

• 1 sheet puff pastry, thawed
• 2 cups butternut squash, peeled and diced
• 1 tablespoon olive oil
• Salt and pepper, to taste
• 1 medium red onion, thinly sliced
• 1 tablespoon butter
• 1/2 teaspoon dried thyme
• 3 oz blue cheese, crumbled
• 1/4 cup chopped walnuts
• 1 egg, beaten (for egg wash)

Directions

1. Preheat the oven to 400°F (200°C). Line a tart pan with parchment paper and fit the puff pastry into the pan, trimming the excess edges neatly.
2. In a bowl, toss the diced butternut squash with olive oil, salt, and pepper. Spread on a baking sheet and roast for 20 minutes or until tender and slightly caramelized.
3. While the squash is roasting, melt butter in a skillet over medium heat. Add the sliced red onion and dried thyme. Cook, stirring occasionally, for about 10 minutes until the onions are soft and caramelized.
4. Once the pastry is prepared in the tart pan, spread the caramelized onions evenly across the base.
5. Top with the roasted butternut squash, followed by crumbled blue cheese and chopped walnuts.
6. Brush the exposed edges of the pastry with the beaten egg for a golden finish.
7. Bake for 20–25 minutes, or until the pastry is puffed and golden and the cheese is melted and bubbling.
8. Allow the tart to cool slightly before slicing. Serve warm or at room temperature.

Servings and timing

This recipe serves 4–6 people.
Preparation time: 20 minutes
Cooking time: 30–35 minutes
Total time: 50–55 minutes

Variations

• Cheese alternatives: Try goat cheese, feta, or ricotta if you prefer a milder flavor.
• Add greens: Scatter arugula or spinach over the tart after baking for a fresh, peppery contrast.
• Sweet twist: Drizzle with honey or balsamic glaze before serving for extra depth.
• Nut-free: Omit walnuts or substitute with toasted pumpkin seeds or sunflower seeds.
• Add protein: Include cooked bacon or pancetta bits for a savory boost.

storage/reheating

Store leftovers in an airtight container in the refrigerator for up to 3 days.
To reheat, place slices on a baking sheet in a 350°F (175°C) oven for about 10 minutes until warmed through and crisp.
Avoid microwaving, as it may make the pastry soggy.
This tart can also be served at room temperature, making it a convenient make-ahead dish.

FAQs

Can I make this tart ahead of time?

Yes, bake the tart and let it cool completely. Store in the refrigerator and reheat before serving, or serve at room temperature.

Can I use frozen butternut squash?

Yes, but thaw and pat dry before roasting to avoid excess moisture.

Do I need to use a tart pan?

No, a baking sheet works as well. Simply roll the puff pastry into a rectangle and fold the edges to form a border.

Is there a substitute for blue cheese?

Yes, goat cheese or feta are good alternatives for a milder taste.

Can I use other types of squash?

Yes, delicata or acorn squash can be used, but they may need different roasting times.

Can this tart be frozen?

It is not recommended, as puff pastry tends to lose its crispness when thawed and reheated.

What wine pairs well with this tart?

Try a crisp white wine like Sauvignon Blanc or a light red such as Pinot Noir.

How do I keep the tart crust from getting soggy?

Pre-roasting the squash and caramelizing the onions helps reduce moisture. You can also bake the tart shell for 5 minutes before adding toppings.

Can I make this gluten-free?

Yes, use a gluten-free puff pastry available in specialty stores.

What should I serve with this tart?

Pair with a mixed green salad, roasted vegetables, or a bowl of soup for a complete meal.

Conclusion

Butternut Squash, Blue Cheese & Walnut Tart is a savory, seasonal favorite that combines ease with elegance. Its mix of textures and bold flavors makes it a standout addition to any fall or winter table. Whether served as a main dish or a flavorful side, this tart is sure to impress and satisfy.

Print