Make the most of summer’s peak produce with a crowd-friendly recipe for Cheesy Tomato Tart with Caramelized Onions.

Top down view of easy Cheesy Tomato Tart with Caramelized Onions

What’s not to love about a classic tomato tart? It’s simultaneously buttery and refreshing, with layers of puff pastry, cheese and tomatoes. The perfect summer marriage, if you ask me!

But this isn’t your ordinary tomato tart.

Heirloom tomato tart with balsamic drizzle

The puff pastry base is home to something so much more than your typical goat cheese. In fact, it’s topped with a flavor-packed mix of goat cheese, cream cheese, garlic, herbs and so many caramelized onions you might as well grab a potato chip and go for a dip.

Wooden spoon stirring caramelized onions, minced garlic and fresh herbs in sauce pan

All that herby, garlicky richness is cooked together then added to the bowl with the cheeses. Give it a whiz and let your stand mixer work its fluffing magic.

Stand mixer bowl containing cheese mixture

After a hearty slathering of caramelized onion cheese spread (um, yum), it’s time for the real stars of the show to make their appearance…

Unbaked cheesy tomato tart with caramelized onions on brown parchment paper

Hello, sweet rainbow medley of heirloom beauties!

Slice after slice is fanned atop the tart to create a pinwheel of flavor. Pop this bad boy into the oven then leave it up to your guests if they’d like to sweeten the deal even further with a thick drizzle of tangy balsamic syrup.

Best cheesy tomato tart with caramelized onions and fresh chives

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Appetizer

Cheesy Tomato Tart with Caramelized Onions

Make the most of summer’s peak produce with a crowd-friendly recipe for Cheesy Tomato Tart with Caramelized Onions.
5 from 2 votes
Top down view of easy Cheesy Tomato Tart with Caramelized Onions
Prep Time 45 mins
Cook Time 20 mins
Total Time 1 hr 5 mins
Servings 8 servings

Ingredients 

  • All-purpose flour, for rolling out dough
  • 1/2 (17.3-oz.) package frozen puff pastry (1 sheet), thawed
  • 4 pounds assorted heirloom tomatoes
  • 2 onions, thinly sliced
  • 2 Tablespoons unsalted butter
  • 1 Tablespoon sugar
  • 4 cloves garlic, minced
  • 1 Tablespoon minced fresh thyme
  • 1 Tablespoon minced fresh rosemary
  • 8 oz. goat cheese, at room temp
  • 8 oz. cream cheese, at room temp
  • 2 large eggs
  • Balsamic syrup, for topping (optional)

Instructions 

  • Preheat the oven to 425°F.
  • In a medium sauce pan set over medium heat, add the butter and onions and cook, stirring, until the butter is melted.
  • Add the sugar and cook, stirring occasionally, until the onions are caramelized, about 20 minutes. Add the garlic, thyme and rosemary and cook until garlic is golden, about 5 minutes. Transfer the mixture to a bowl to cool completely.
  • In a stand mixer fitted with paddle attachment, beat together the goat cheese, cream cheese , eggs, ½ teaspoon salt and ¼ teaspoon pepper. Add caramelized onion mixture and mix.
  • Lightly flour your work surface then unfold the puff pastry and use a rolling pin to lightly roll over and seal any creases.
  • Prick the center of the pastry all over with a fork then score a 1-inch border around all of the edges.
  • Spread the cream cheese mixture on top of the pastry, keeping it within the docked border. Top the cream cheese mixture with the sliced tomatoes.
  • Bake the tart until it is golden brown and puffed, about 25 minutes. Remove it from the oven and let it cool for 10 minutes before slicing and serving with a drizzle of balsamic syrup (optional).
  • ★ Did you make this recipe? Don't forget to give it a star rating below!

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Recipe by Just a Taste. Please do not reprint this recipe without my permission. If you'd like to feature this recipe on your site, please rewrite the method of preparation and link to this post as the original source.


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Nutrition

Calories: 358kcal, Carbohydrates: 22g, Protein: 12g, Fat: 26g, Saturated Fat: 13g, Cholesterol: 93mg, Sodium: 262mg, Potassium: 660mg, Fiber: 4g, Sugar: 10g, Vitamin A: 2759IU, Vitamin C: 35mg, Calcium: 110mg, Iron: 2mg

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Comments

  1. 5 stars
    Hi There.
    We’ve tried this one as my Daughter and I like the ingredient compilation and this sort of lip-luring creation that you posted! Nice for both of us to work on it together and we both enjoy that too! Tasty, easy, rocket science graduate temperament not required to make this and just a fast hand to grab some before it’s all gone and disappear’s down Into stomachs that Didn’t Make Any Of It! (Cannot Say I Blame Them Though!!!) Thanks And Keep Up The Standard Please! Jessica & Tony.

  2. 5 stars
    This is just the type of recipe I am looking for because my best friend and I will be going tomato picking soon and this will be perfect! My husband does not like onions, but I do! Especially caramelized ones, yummy! You make it look so easy, I appreciate the great directions!

  3. Why does it say the tomatoes are divided? I don’t see a reference to them beyond layering them on the tart. Thanks!

    1. Thanks so much for catching that, Laurie! That was an error on my part. No need to divide the tomatoes :)

    1. Hi there! The shape will depend on what brand of puff pastry you use. You can buy it in circular or square shape. And I’ve updated the language to reflect scoring a border around the edge :)