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Tomato tart with goat cheese and caramelized onions on a piece of parchment paper with loose basil leaves.

Tomato, Goat Cheese, and Caramelized Onion Tart

  • Author: Nguyet Vo
  • Prep Time: 30 minutes
  • Cook Time: 30 minutes
  • Total Time: 1 hour
  • Yield: 4 servings 1x
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American


This tomato tart on flaky puff pastry dough is topped with caramelized onions, goat cheese, Parmesan cheese, fresh basil, and tomatoes. It’s an easy and delicious way to savor fresh, ripe tomatoes. 


Units Scale
  • 12 ounces assorted tomatoes (preferably heirloom), sliced 1/4 inch thick
  • Kosher salt
  • 1 tablespoon olive oil, plus more for brushing the tomatoes
  • 1 medium onion, peeled, halved, and then sliced about 1/8 inch thick
  • 2 tablespoons dry white wine
  • 1/2 teaspoon dried thyme
  • Kosher salt and freshly ground pepper
  • 1 sheet frozen puff pastry (such as Pepperidge Farm), defrosted overnight in the refrigerator
  • 4 ounces soft goat cheese, at room temperature
  • 2 tablespoons freshly grated Parmesan cheese
  • 2 ounces Parmesan cheese, shaved with a vegetable peeler
  • 2 tablespoons julienned basil leaves


  1. Prep tomatoes. Line a large baking sheet with a double layer of paper towels. Lay tomato slices in a single layer on the prepared baking sheet. Sprinkle tomato slices with salt. Flip the tomatoes over and sprinkle second side with salt. Allow the tomatoes to sit for 30 minutes. While tomatoes are draining, prepare the onions. Also, set out the goat cheese to soften if you haven’t already.
  2. Cook onions. Heat oil in a large skillet over medium heat. Add the onions and sauté them briefly until they are evenly coated with oil. Cover the pan and reduce the heat to low. Let the onions steam for about 10 minutes, stirring occasionally. Uncover the onions, add white wine, thyme, and a pinch of salt and pepper. Continue to cook the onions until they are nicely browned and there is almost no moisture in the pan, about 15-25 minutes more.
  3. Preheat. Preheat oven to 425 degrees F.
  4. Score puff pastry. Unfold one sheet of puff pastry and place it on a baking sheet lined with parchment paper. With the tip of a sharp paring knife, lightly score a border ¾ inch from edges (being careful not to cut all the way through the puff pastry).
  5. Add cheese. Spread the goat cheese on the pastry sheet up to the scored border line. Sprinkle grated Parmesan cheese over the goat cheese.
  6. Add onions. Spread onion mixture on top of the goat cheese and Parmesan cheese, again staying within the scored border.
  7. Add tomatoes. Pat the tomato slices dry and lay them on top of the onions, overlapping as necessary. Brush the tomatoes lightly with olive oil and sprinkle with salt and pepper. Scatter shaved Parmesan over tart.
  8. Bake tart. Bake for 20 to 25 minutes, until the pastry is golden brown. Sprinkle baked tart with julienned basil leaves and serve.


Keywords: tomato tart, puff pastry tomato tart, puff pastry tart

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