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Overhead view of onion tarte tatin topped with goat cheese and rosemary.

Onion Tarte Tatin


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  • Author: Lexi
  • Total Time: 1 hour 30 minutes
  • Yield: 8 servings 1x
  • Diet: Vegetarian

Description

Perfectly caramelized balsamic roasted shallots sit atop a bed of crispy, buttery puff pastry to make the most delicious Onion Tarte Tatin! 


Ingredients

Units Scale
  • 14 ounces puff pastry, defrosted in the refrigerator
  • 12-15 shallots (or another onion of choice)
  • 1/2 cup granulated sugar
  • 1/4 cup water
  • 3 tablespoons balsamic vinegar
  • 4 tablespoons butter
  • 2 teaspoons finely chopped rosemary
  • 3/4 teaspoon kosher salt
  • 1/4 teaspoon black pepper
  • For topping: crumbled goat cheese

Instructions

  1. Preheat oven to 400˚F. 
  2. Bring a medium pot of water to a boil, then remove from heat. Add the shallots to the pot (whole and unpeeled), cover, and let sit for 6-7 minutes. 
  3. Drain the shallots. When they are cool enough to handle, Slice off both ends, then remove the peel (it should come off easily!). Slice each shallot into 1/2-inch thick rounds. Set aside. 
  4. Roll out the puff pastry on a lightly floured surface until it's large enough that you can cut out an 11-inch round. Return to the refrigerator while you make the caramel. 
  5. Heat a 10-inch stainless steel skillet over medium and add in the sugar and water. Gently stir just until the sugar is dissolved, then let it boil untouched for 4-5 minutes, until it's golden brown. 
  6. Carefully add in the butter, balsamic, rosemary, salt and pepper (the mixture will bubble up a little bit) and whisk well. Let it simmer for 30-60 seconds while whisking. Remove from heat. 
  7. Arrange the shallots atop the balsamic caramel, placing them as close together as possible. 
  8. Place the puff pastry over the top and gently tuck in the edges. 
  9. Bake for 30 minutes until the puff pastry is golden brown, then cover the puff pastry with aluminum foil and return to the oven for another 30-35 minutes. 
  10. Remove from the oven and let sit for 5-10 minutes. Carefully tilt the pan and check to see if it looks like the caramel is watery. If so, turn on a burner to medium-high and let it simmer for 2-3 minutes until it starts to thicken again. (This can happen depending on how much moisture your shallots have.)
  11. Let it cool for 15-20 minutes, then carefully flip onto a large plate or cutting board. Top with crumbled goat cheese before slicing. Enjoy! 

Notes

Par-cooking the shallots for a few minutes not only makes them significantly easier to peel, but it also helps soften them slightly so they get super caramelized and melty in the oven. 

When making the caramel, don't stir it once the sugar has dissolved. If it's not cooking evenly and it's starting to brown too quickly in the middle, you can gently swirl the pan to better distribute the caramel. 

Once you add the butter and balsamic to the caramel, it may start to seize up slightly. Don't worry – just keep it over medium heat and keep whisking until it comes back together.

If the caramel starts to smell burnt, it's probably gone too far and we suggest starting over. The color should be a medium amber when it's done.

Storage: Let it cool completely, then cover and refrigerate for up to 3 days. 

You can reheat the entire tart or individual slices at 350˚F for 15-20 minutes, or until the tart is warmed through and the puff pastry is crisp again. 

  • Prep Time: 30 minutes
  • Cook Time: 60 minutes
  • Category: Side Dishes
  • Method: Oven
  • Cuisine: French

Nutrition

  • Serving Size: 1 slice
  • Calories: 371
  • Sugar: 19.9 g
  • Sodium: 234.7 mg
  • Fat: 20.3 g
  • Carbohydrates: 43.4 g
  • Fiber: 3.2 g
  • Protein: 5.4 g