How to make French Onion Tart Recipe

Hi there, fellow food enthusiasts! It’s Julia here from Dinner with Julia, and today I’m sharing with you my delightful journey in creating one of my favorite French delicacies – the French Onion Tart. Now, I won’t be delving into the recipe itself as I’ve already shared that in a previous post, so do look it up if you need a refresher. However, I am excited to share the story behind this beautiful dish, some cooking tips to perfect it, serving suggestions, and answers to frequently asked questions about this recipe.

French Onion Tart Recipe

French Onion Tartlets Recipe | Girl Versus Dough
A beautifully caramelized French Onion Tart, fresh out of the oven – a testament to the magic of Julia’s French Onion Tart Recipe

French Onion Tart Recipe

Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Course Snack
Cuisine French
Servings 4 people
Calories 650 kcal


  • 1 large pan
  • 1 large bowl


  • Two tablespoon of Herbs de Provence
  • Half cup of butter
  • A pack of tart dough
  • Half cup of cream
  • Two tablespoon of minced garlic
  • Two cups of onion
  • Two tablespoon of olive oil
  • Butter for greasing


  • Take a large pan.
  • Add the oil and onion into the pan.
  • Cook the onion and add the spices and garlic into the mixture.
  • Cool it down once it is cooked.
  • Take a large bowl.
  • Add the cream and beat it properly.
  • Make it frothy and then add the butter.
  • Beat the mixture properly and then add the onion mixture in the butter.
  • Mix the mixture properly.
  • Lay the tart dough into greased tart dishes.
  • Bake the dish properly for ten to fifteen minutes.
  • Add the chopped cilantro on top.
  • The dish is ready to be served.


Keyword onion, tart dough

Cooking French Onion Tart in an Air Fryer

French Onion Tartlets (An Easy 30 Minute Appetizer)
The perfect balance of flavors: sweet caramelized onions nestled in a crisp, golden crust – the heart of the French Onion Tart Recipe

Preparing the Tart

Start by preparing the tart as per the recipe. Once your dough is ready and your onions are beautifully caramelized, it’s time to assemble the tart. Instead of using a traditional tart pan, opt for a round cake pan that fits into your air fryer. Make sure it’s well greased to prevent sticking.

Air Frying the Tart

Preheat your air fryer at 180°C (350°F) for about 5 minutes. Place the assembled tart in the cake pan into the air fryer basket. Set the temperature to 160°C (320°F) and cook for about 15-20 minutes. Keep a close eye on it to prevent over-browning.

Checking the Doneness

The top should be golden brown, and the crust should be fully cooked. You can check the doneness by inserting a toothpick into the crust. If it comes out clean, your tart is ready. If not, continue cooking for a few more minutes.

Serving the Air Fryer French Onion Tart

Once done, carefully remove the tart from the air fryer and let it cool for a few minutes before serving. The result is a perfectly cooked French Onion Tart with a crispy crust and a beautifully caramelized onion filling, all achieved with less oil and in less time!

Tips for making French Onion Tart

French Onion Tarts in Phyllo Shells | Couple in the Kitchen
A close-up shot of the French Onion Tart, showcasing the delicate layers of caramelized onions and melted Gruyere cheese – the stars of Julia’s French Onion Tart Recipe.

Growing up, my family made frequent trips to France. Over time, I fell in love with French cuisine. Their attention to detail, the rich flavors, everything was simply exquisite. But one dish that truly stole my heart was the French Onion Tart. This tart is not just a dish; it’s an experience, a taste of French culture, history, and tradition all packed into a delightful pastry.

Cooking Tips for the Perfect French Onion Tart

Choose your onions wisely

The star of the French Onion Tart is, of course, the onions. Selecting the right type of onion can make or break your tart. Sweet onions such as Vidalia or Walla Walla are my go-to choices due to their mild flavor and natural sweetness which caramelizes beautifully.

Patience is key

Slow and steady wins the race, especially when caramelizing onions. Resist the urge to speed up the process. Instead, let the onions caramelize slowly over medium-low heat. This will unlock their natural sugars, resulting in a deep, rich flavor that truly makes this tart shine.

Quality over quantity

When it comes to the pastry, less is more. A thin, crisp crust is what you’re aiming for. Too much dough can overpower the delicate flavors of the caramelized onions and Gruyere cheese.

Serving Suggestions for the French Onion Tart

French Onion Tartlets Recipe | Girl Versus Dough
A slice of the French Onion Tart served with a fresh arugula salad and a glass of Chardonnay – the ideal serving suggestion for the French Onion Tart Recipe

Pair with a salad

The richness of the French Onion Tart pairs beautifully with a fresh, crisp salad. My personal favorite is a simple arugula salad with a light vinaigrette.

Wine pairing

A glass of French white wine, such as a Chardonnay, complements the savory flavors of the tart. If you prefer reds, a lighter-bodied Pinot Noir would also work well.

FAQs about Julia’s French Onion Tart Recipe

  • Can I make the tart dough in advance? Absolutely! You can prepare the dough up to two days in advance and store it in the refrigerator.
  • What type of cheese should I use? I recommend using Gruyere cheese. Its nutty, sweet flavor balances out the savory caramelized onions perfectly.
  • Can this tart be frozen? Yes, the baked tart freezes well. Just ensure it is cooled completely before wrapping it in plastic wrap and foil.
  • Can I use red onions instead of sweet onions? While you can certainly use red onions, they have a stronger flavor which may overpower the delicate balance of the tart.
  • Why is my crust soggy? This could be due to too much moisture in your onions. Before adding them to the tart, make sure the onions are fully caramelized and any liquid has evaporated.

So there you have it! My journey with the French Onion Tart, from falling in love with it in France to recreating it in my own kitchen. I hope you find these tips and suggestions helpful as you embark on your own culinary adventure with this traditional French dish. Bon Appétit!

Leave a Comment

Your email address will not be published. Required fields are marked *

Recipe Rating

Scroll to Top