Name: Irresistible Caramelized Onion Butternut Squash Tart Recipe
Prep time: 30 min
Cook time: 50 min
Total time: 90 min
Ingredients: 1 package Puff Pastry (store-bought or homemade); 2 medium Butternut Squash (about 2 lbs, can substitute with sweet potatoes); 2 large Onions; 2 tablespoons Olive Oil (can substitute with avocado oil); 1 teaspoon Salt (adjust to taste); 1/2 teaspoon Black Pepper (adjust to taste); 1 teaspoon Fresh Thyme (or 1/2 teaspoon dried, can substitute with rosemary); 1 cup Goat Cheese (can substitute with feta); 1/4 cup Heavy Cream (can use dairy-free alternative); 1 large Egg (for egg wash, omit for vegan option); Red Pepper Flakes (optional)

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As the leaves turn golden and the air becomes crisp, there’s a magical invitation to jump into the kitchen and create something comforting. Allow me to introduce you to the Caramelized Onion Butternut Squash Tart, an easy autumn delight that blends sweet, tender butternut squash and silky caramelized onions into a visually stunning dish. This tart not only impresses the eyes but also the palate, making it perfect for cozy gatherings with friends or family. Plus, it’s straightforward to prepare, allowing you to spend less time fussing and more time savoring every bite. With its vegetarian profile, this recipe can also be adapted to be gluten-free if you choose a suitable puff pastry. So, how about brightening your dining table with this delightful tart? You won’t want to miss the warm, inviting flavors awaiting you!

Why is this tart a must-try?

Irresistible flavor fusion: The balance of sweet butternut squash and savory caramelized onions creates a taste sensation you won’t forget.
Striking presentation: With its beautiful colors and flaky crust, this tart is sure to impress at any gathering.
Versatile dining: Enjoy it as a hearty main or elegant appetizer; it pairs wonderfully with a crisp salad or roasted veggies.
Simple preparation: Despite its sophisticated appearance, this tart is easy enough for cooks of all skill levels to master.
Seasonal delight: Perfect for autumn festivities, it embodies the cozy, comforting flavors of the season.
For an even lighter alternative, consider trying my Make-Ahead Caramelized Onion Recipe that perfectly complements this dish!

Caramelized Onion Butternut Squash Tart Ingredients

• Embrace the flavors of autumn with this tart!

For the Pastry
Puff Pastry – The flaky base that holds all the delightful fillings; store-bought makes it easy, while homemade adds a personal touch.
For the Filling
Butternut Squash (2 medium, about 2 lbs) – Sweet and creamy, this is the star of the tart; can be swapped for sweet potatoes if preferred.
Onions (2 large) – These deepen the flavor through caramelization, providing a savory contrast to the sweet squash.
Olive Oil (2 tablespoons) – Essential for roasting the squash and cooking the onions; avocado oil can be used for a unique taste.
Salt (1 teaspoon) – Enhances all the flavors; adjust according to your taste preferences.
Black Pepper (1/2 teaspoon) – Introduces a mild heat; feel free to modify it to suit your palate.
Fresh Thyme (1 teaspoon, or 1/2 teaspoon dried) – Aromatic and perfect with these ingredients; rosemary can be substituted if needed.
Goat Cheese (1 cup, or feta for tang) – Adds rich creaminess; ricotta offers a lighter alternative.
Heavy Cream (1/4 cup, or dairy-free alternative) – Gives the tart its smooth texture; coconut cream is a great dairy-free option.
Egg (1, for egg wash) – Provides a beautiful golden finish to the pastry; omit for a vegan option or use a flax egg as a substitute.
Red Pepper Flakes (optional) – Adds a kick of heat; leave it out if you prefer a more mild tart.

Now that you have the ingredients gathered, let’s dive into the harmonious blending of flavors as we prepare your delicious Caramelized Onion Butternut Squash Tart!

Step‑by‑Step Instructions for Caramelized Onion Butternut Squash Tart

Step 1: Preheat Oven
Begin by preheating your oven to 400°F (200°C). This ensures a perfectly crisp crust for your Caramelized Onion Butternut Squash Tart. Use an oven thermometer if needed to confirm the temperature, as a well-heated oven is essential for roasting the squash and baking the puff pastry to golden perfection.

Step 2: Prepare Squash
While the oven is heating, peel and dice the butternut squash into small cubes. Toss the diced squash in a large bowl with olive oil, salt, and black pepper. Spread the mixture evenly on a baking sheet and roast for 25–30 minutes, or until the squash is tender and starts to caramelize, stirring halfway through for even cooking.

Step 3: Caramelize Onions
In a skillet, heat 2 tablespoons of olive oil over medium heat. Slice the onions thinly and add them to the hot skillet. Sauté the onions for about 20 minutes, stirring occasionally, until they become golden brown and sweetly fragrant. This step enhances the flavors and adds depth to your Caramelized Onion Butternut Squash Tart.

Step 4: Roll Puff Pastry
After the vegetables are prepared, lightly flour your countertop and roll out the puff pastry to fit your tart pan. Make sure to roll it into a round shape about ¼ inch thick. Carefully place the rolled pastry into the pan, gently pressing it into the corners, and remember to prick the bottom with a fork to prevent bubbling during baking.

Step 5: Assemble Tart
Now it’s time to build the layers of your Caramelized Onion Butternut Squash Tart. Start by spreading the caramelized onions evenly over the puff pastry base. Next, distribute the roasted butternut squash cubes on top. Crumble the goat cheese over the squash, drizzle with heavy cream, and sprinkle the fresh thyme for an aromatic finish.

Step 6: Bake Tart
Place the assembled tart in the preheated oven. Bake for 25–30 minutes, or until the pastry is golden brown and the cheese starts to melt. Keep an eye on it in the last few minutes to achieve that perfect golden crust—this is when your kitchen will be filled with enticing autumn aromas, heralding a delicious dinner.

Step 7: Cool and Serve
Once baked, remove the tart from the oven and let it cool for about 10 minutes. This cooling period allows the filling to set, making it easier to slice. After cooling, cut into wedges and serve warm, showcasing the delicious layers of your Caramelized Onion Butternut Squash Tart to family and friends.

What to Serve with Caramelized Onion Butternut Squash Tart

Looking to create a beautiful spread to complement your tart? Here are some delicious pairings that will enhance your dining experience.

Mixed Green Salad: A light, crisp salad with a tangy vinaigrette balances the rich flavors of the tart perfectly. The freshness of greens adds a delightful contrast to the creamy filling.
Roasted Brussels Sprouts: Deliciously caramelized Brussels sprouts add a sweet and nutty flavor, harmonizing beautifully with the tart’s onion and squash notes. Their crispy texture is an irresistible contrast.
Savory Potato Gratin: This creamy side dish offers a luxurious creaminess and comforting potato flavors that will round out the meal. The buttery layers create a satisfying duo with the lighter tart.
Garlic Herb Couscous: Fluffy couscous seasoned with garlic and fresh herbs brings a delightful texture and aromatic flair to the table. It’s a fantastic choice for soaking up the tart’s savory creaminess.
Apple Cider: A chilled glass of apple cider refreshes the palate and echoes the autumn theme of the dish beautifully. Its sweetness complements the squash while keeping the meal balanced.
Pumpkin Spice Cheesecake: Finish on a sweet note with rich pumpkin cheesecake, where warming spices mirror the flavors in your tart. A crumbly crust adds a lovely crunch and is a delightful dessert to round out the meal.
Herbed Goat Cheese Crostini: Serve these crunchy bites as an appetizer. The creamy cheese with fresh herbs pairs wonderfully with your tart’s flavors, creating a delightful start to your meal.
Sparkling Water with Lemon: A refreshing drink option that adds some zest and keeps your taste buds lively between bites of your delicious tart. The citrus melds well with the rich elements.
Caramelized Pear Galette: This rustic dessert echoes the autumnal theme with sweet, fragrant pears, and offers a luscious, buttery finish to your dining experience, akin to the flavors of your tart.

Make Ahead Options

Preparing the Caramelized Onion Butternut Squash Tart in advance is a fantastic time-saver for busy weeknights! You can roast the butternut squash and caramelize the onions up to 3 days in advance, storing them separately in airtight containers in the refrigerator. Additionally, you can roll out the puff pastry and place it in the tart pan up to 24 hours ahead; just keep it covered with plastic wrap to prevent drying out. When you’re ready to serve, simply layer the prepped components, add the goat cheese, drizzle with cream, and bake the tart for about 25–30 minutes. This method keeps your dish just as delicious while allowing you to spend more time with loved ones.

Expert Tips for Caramelized Onion Butternut Squash Tart

Uniform Onion Slices: Ensure your onions are sliced evenly for consistent caramelization; different sizes lead to uneven cooking and flavor.
Moisture Management: Avoid soggy pastry by not overcrowding the tart with too much cream or wet ingredients; keep it balanced for ideal texture.
Proper Cooling: Allow the tart to cool for at least 10 minutes before slicing; this helps the filling set and prevents messy cuts.
Flavor Adjustments: Don’t hesitate to play with fresh herbs and cheese; swap goat cheese for ricotta or feta to find your perfect flavor combination.
Perfect Roasting: Keep an eye on the butternut squash while roasting—stir halfway to ensure even cooking and prevent any burning.

Caramelized Onion Butternut Squash Tart Variations

Feel free to enhance your creation by exploring these delightful twists and substitutions!

Dairy-Free: Use coconut cream instead of heavy cream and swap goat cheese with a dairy-free cheese alternative for a creamy, non-dairy delight.
Embrace these alternatives for a dish that everyone can indulge in without guilt.
Gluten-Free: Opt for a gluten-free puff pastry to cater to dietary needs without sacrificing flavor or texture.
Soon, everyone will enjoy this autumn gem, gluten-free and delicious!
Herb Infusion: Try rosemary instead of thyme for a fragrant twist that adds a different depth of flavor to your tart.
Experimenting with herbs can transform your dish into something extraordinary.
Veggie Boost: Add spinach or kale to the filling to amp up the nutrition without compromising the taste.
A pop of greenery not only boosts health benefits but also enhances the color and appeal of your tart!
Spicy Kick: Increase the heat with diced jalapeños or more red pepper flakes for those who love an extra kick in their meal.
Each spicy bite invites adventure and warms the soul, especially in the cooler months.
Nutty Crust: Incorporate finely chopped nuts like walnuts or pecans into the puff pastry for added flavor and crunch.
This nutty variation can give the tart an unexpected texture that delights with every bite.
Meaty Option: If you’re craving something a little heartier, sauté some crumbled sausage or ground turkey and mix it with the roasted squash.
This hearty option turns a delightful vegetarian dish into a satisfying main course for meat lovers.
Zesty Flavor: Drizzle a balsamic reduction over the tart after baking for a sweet and tangy sauce that elevates the flavors to new heights.
The balance of sweetness and acidity from this addition brings your tart to life!

Explore these delicious variations, and make the Caramelized Onion Butternut Squash Tart your own! With creativity, every bite turns into a new discovery.

How to Store and Freeze Caramelized Onion Butternut Squash Tart

Fridge: Store leftovers in an airtight container for up to 3 days to maintain freshness; reheat in the oven for a delightful warm texture.

Freezer: Wrap the tart tightly in plastic wrap and aluminum foil, then freeze for up to 2 months; thaw in the fridge before reheating.

Reheating: For best results, reheat your Caramelized Onion Butternut Squash Tart in a preheated oven at 350°F (175°C) until heated through, about 15–20 minutes.

Serving Suggestions: Enjoy slices cold or warm, paired with a refreshing salad or crispy vegetables for a complete meal experience.

Caramelized Onion Butternut Squash Tart Recipe FAQs

What should I look for when selecting butternut squash?
Absolutely! Choose butternut squash that feels heavy for its size, with a smooth, unblemished skin. Avoid any that have soft spots or dark blemishes. The ideal squash will have a uniform tan color, indicating ripeness.

How should I store leftover tarts?
Very! After your delicious meal, let leftovers cool completely. Store them in an airtight container in the refrigerator for up to 3 days. Reheat in the oven for best results, as it helps to retain that wonderful flaky pastry texture.

Can I freeze the Caramelized Onion Butternut Squash Tart?
Definitely! To freeze, wrap the cooled tart tightly in plastic wrap and then in aluminum foil to prevent freezer burn. It can be stored in the freezer for up to 2 months. When ready to enjoy, thaw it in the refrigerator overnight before reheating.

What if my onions are not caramelizing properly?
No worries! If your onions aren’t browning as expected, check that you’re cooking them over medium heat and not rushing the process. Caramelization takes time! If they start to brown too quickly, reduce the heat. Stir occasionally to ensure even cooking. Continue cooking until they turn golden brown and have that sweet aroma, which usually takes about 20 to 25 minutes.

Is this recipe safe for those with dairy allergies?
Great question! To adapt this tart for those with dairy allergies, substitute the goat cheese with a dairy-free cheese alternative or use ricotta made from nuts. Additionally, replace the heavy cream with coconut cream or a suitable plant-based option, ensuring everyone’s included in the deliciousness!

How long can I keep this tart in the fridge?
Absolutely! Your tart can stay fresh in the fridge for up to 3 days when stored properly in an airtight container. If you need to reheat it, place it in a preheated oven at 350°F (175°C) for about 15–20 minutes, allowing those lovely flavors to shine!