Let me tell you, there’s something truly magical about the combination of sweet, caramelized onions and earthy butternut squash nestled in a flaky puff pastry. This caramelized onion butternut squash tart is the kind of dish that makes your kitchen smell like a warm hug! It’s versatile too—perfect for a cozy dinner, a festive gathering, or even brunch with friends. What I love most about this tart is how it brings out the best in simple ingredients, transforming them into a showstopper. Trust me, once you take a bite, you’ll fall in love with its rich flavors and delightful textures!

Ingredients
- 1 sheet of puff pastry (this will be your delicious, flaky base)
- 2 cups butternut squash, diced (sweet and nutty—perfect for this tart!)
- 1 large onion, thinly sliced (for that rich caramel flavor)
- 2 tablespoons olive oil (to sauté those onions to perfection)
- 1 teaspoon salt (to enhance all those wonderful flavors)
- 1/2 teaspoon black pepper (just a pinch for a little kick)
- 1 teaspoon fresh thyme leaves (adds a lovely herbaceous note)
- 1/2 cup goat cheese, crumbled (for that creamy, tangy finish)
- 1 egg, beaten for egg wash (gives that golden shine on the crust)
How to Prepare the Caramelized Onion Butternut Squash Tart
Now, let’s dive into the fun part—making this scrumptious tart! Don’t worry, I promise it’s easier than it looks. Just follow these steps, and you’ll be savoring every bite in no time.
Step-by-Step Instructions
- First things first, preheat your oven to 400°F (200°C). This will ensure that your tart bakes to perfection.
- While the oven is warming up, grab a skillet and heat the olive oil over medium heat. Once it’s shimmering, toss in the thinly sliced onions. Cook those bad boys for about 15 minutes, stirring occasionally until they’re beautifully caramelized and golden brown. Oh, the smell will be divine!
- While the onions are working their magic, let’s get that butternut squash ready. In a pot, steam the diced squash until it’s tender—this should take around 10 minutes. You want it soft enough to mix in but not mushy. Drain and set aside.
- Now, on a lightly floured surface, roll out your puff pastry to fit your baking sheet. You want it nice and even so it bakes uniformly. Place the rolled-out pastry on your baking sheet, and don’t forget to poke a few holes in it with a fork. This helps it to not puff up too much in the oven.
- Spread those luscious caramelized onions evenly over the pastry, covering it like a warm blanket.
- Next, layer the steamed butternut squash on top of the onions. Sprinkle the fresh thyme leaves and crumbled goat cheese over everything. Trust me, this combination is to die for!
- Now for the finishing touch—brush the edges of the pastry with the beaten egg. This will give your tart that gorgeous golden color as it bakes.
- Pop it into the preheated oven and bake for about 25-30 minutes. Keep an eye on it—you’re looking for a lovely golden brown finish.
- Once it’s done, let it cool for a few minutes before slicing. Serve warm and enjoy every heavenly bite!
Why You’ll Love This Caramelized Onion Butternut Squash Tart
- Quick and easy to prepare—perfect for weeknight dinners!
- A delightful combination of sweet and savory flavors that impresses every time.
- Vegetarian-friendly, making it a great option for everyone at the table.
- Versatile enough for any occasion, from casual brunches to elegant gatherings.
Tips for Success
To really elevate your caramelized onion butternut squash tart, here are some handy tips! First, don’t rush the caramelizing process—take your time with the onions to develop that deep, rich flavor. Using fresh thyme is a game changer; it adds a burst of freshness that perfectly complements the sweetness of the squash. If you can, opt for high-quality goat cheese; its creamy tanginess truly makes this tart shine. And remember, let your tart cool slightly before slicing—it helps the filling set up nicely, making for prettier slices. Trust me, these little details make all the difference!
Nutritional Information
Each slice of this caramelized onion butternut squash tart is packed with flavor and is a delightful addition to your meal. Here’s a quick look at the estimated nutritional values per serving: about 250 calories, 15g of fat, 6g of protein, and 24g of carbohydrates. Keep in mind these values can vary based on specific ingredients used!
FAQ Section
I know you might have some questions about this scrumptious tart, so let’s tackle a few common ones! If you don’t have goat cheese on hand, feta works beautifully as a substitute, giving a slightly different yet delightful flavor. For those who want to mix it up, try adding spinach or mushrooms for extra veggies! As for storage, you can keep any leftovers in the fridge for up to three days—just make sure they’re in an airtight container. When you’re ready to enjoy again, a quick reheat in the oven will bring back that crispy pastry goodness. Yum!
Storing and Reheating Instructions
To store your leftover caramelized onion butternut squash tart, place it in an airtight container in the refrigerator for up to three days. When you’re ready to enjoy it again, simply reheat in a preheated oven at 350°F (175°C) for about 10-15 minutes to restore that delightful crispiness. Enjoy!
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Caramelized Onion Butternut Squash Tart: 7 Simple Steps!
- Total Time: 60 minutes
- Yield: 6 servings 1x
- Diet: Vegetarian
Description
A savory tart made with caramelized onions and butternut squash.
Ingredients
- 1 sheet of puff pastry
- 2 cups butternut squash, diced
- 1 large onion, thinly sliced
- 2 tablespoons olive oil
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon fresh thyme leaves
- 1/2 cup goat cheese, crumbled
- 1 egg, beaten for egg wash
Instructions
- Preheat the oven to 400°F (200°C).
- Heat olive oil in a skillet over medium heat.
- Add onions and cook until caramelized, about 15 minutes.
- In a separate pot, steam butternut squash until tender, about 10 minutes.
- Roll out the puff pastry and place it on a baking sheet.
- Spread the caramelized onions over the pastry.
- Add the steamed butternut squash on top.
- Sprinkle with thyme and goat cheese.
- Brush the edges of the pastry with beaten egg.
- Bake for 25-30 minutes until golden brown.
Notes
- Use fresh thyme for better flavor.
- Ensure squash is tender before adding to the tart.
- Leftovers can be stored in the fridge for up to 3 days.
- Prep Time: 20 minutes
- Cook Time: 40 minutes
- Category: Main Course
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 250
- Sugar: 4g
- Sodium: 400mg
- Fat: 15g
- Saturated Fat: 6g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 24g
- Fiber: 2g
- Protein: 6g
- Cholesterol: 25mg
Keywords: caramelized onion butternut squash tart











