Tarte Tatin with red onions

Put the red onion at the center of this colorful tarte tatin with a puff pastry base made from puff pastry and butter. The sweet and caramelized onions harmonize with a rich salsa verde, adding a touch of flavor to every bite. This dish is perfect for impressing guests and a real eye-catcher that will leave you wanting more.


  • 320g ready-rolled puff pastry
  • 50g unsalted butter
  • 3 large red onions, cut into wedges, leaving most of the root intact
  • 2 tbsp balsamic vinegar
  • 30 g light brown soft sugar
  • a small handful of flat-leaf parsley, roughly chopped
  • small handful of mint, leaves picked and roughly chopped
  • small handful of chives, finely chopped
  • 2 tbsp capers, coarsely chopped
  • 1 lemon, juiced
  • 1 tbsp red wine vinegar
  • 80 ml extra virgin olive oil

Preparation steps

  1. Preheat the oven to 200°C/180°C fan/gas 4.
  2. Unravel the sheet of puff pastry and remove the parchment.
  3. Cut a 25cm circle from the dough, using an ovenproof frying pan as a template.
  4. Place the dough circle on a tray and refrigerate until needed.
  5. Melt butter in the same skillet over medium heat.
  6. Once foaming, arrange the onions in concentric circles in the pan, close tightly and reduce the heat to low.
  7. Season with a pinch of salt and cook for 10-15 minutes until the onions begin to caramelize.
  8. Keep an eye on them so they don’t burn.
  9. Add vinegar and sugar and reduce heat to medium-low.
  10. Cook for another 5-8 minutes, until a sticky glaze has formed on the bottom of the pan and the onions are deeply caramelized.
  11. Remove the dough from the refrigerator, place it on top of the onions and fold the edges tightly.
  12. Prick all over with a fork.
  13. Place in the oven and bake for 20-25 minutes, or until the dough is golden brown and risen.
  14. In the meantime, prepare the salsa verde.
  15. Combine herbs and capers in a large bowl.
  16. Add lemon juice, vinegar and olive oil.
  17. Season with salt, pepper and a pinch of sugar.
  18. Remove the Tarte Tatin from the oven and let it cool for 5 minutes.
  19. Place a large plate over the pan and turn the Tarte Tatin onto it. Leave the pan in place (you will need to wear oven gloves as the pan is still hot).
  20. Leave the pan upside down on the plate for a few more minutes (this will allow the tart to naturally separate from the bottom).
  21. Remove the pan and spoon the salsa verde over the top before cutting into wedges to serve.

Nutritional Information

Equipment and tools

  • baking tray
  • frying pan
  • Sharp knife
  • dulcimer
  • measuring spoon
  • Spatula or wooden spoon
  • Basting brush
  • Whisk

Allergen information

This recipe contains gluten (from puff pastry) and milk (from butter). It may also contain traces of nuts, as capers are sometimes processed in plants that process nuts.

Storage and leftovers

This red onion tart tatin can be stored in an airtight container in the refrigerator for up to 2 days. To reheat, place in a preheated 350°F (180°C) oven for about 10 minutes or until heated through. Leftovers can also be enjoyed cold as a snack or packed lunch.

Health Benefits of Red Onion Tarte Tatin

The delicious and visually appealing red onion tarte tatin not only delights your taste buds but also offers numerous health benefits. Packed with a variety of nutritious ingredients, this delicious dish deserves a special place on your dinner table. Let’s dive into the health benefits of the key ingredients:

Red onions

Red onions, the star of this recipe, are not only flavorful but also highly nutritious. They are an excellent source of antioxidants, especially quercetin. Antioxidants protect your body from damage caused by harmful free radicals and reduce the risk of chronic diseases such as heart disease and certain cancers. Red onions also contain sulfur compounds, which promote heart health and may help lower blood sugar levels.

puff pastry

The puff pastry used in this recipe gives the Tarte Tatin a crispy and flaky texture. While it may not offer significant health benefits, moderation is key. Enjoying this treat on special occasions can be part of a balanced lifestyle.

balsamic vinegar

Balsamic vinegar not only enhances the flavor of tarte tatin but also has health benefits. It is rich in antioxidants and may help lower cholesterol, improve digestion and reduce the risk of heart disease.

Herbs (flat-leaf parsley, mint, chives)

The small handfuls of flat-leaf parsley, mint and chives not only add a touch of freshness to the dish, but also add to its nutritional value. Herbs are rich in vitamins, minerals and antioxidants that promote overall health and well-being. They can support digestion, strengthen the immune system and have an anti-inflammatory effect.


With their characteristic spicy taste, capers are a wonderful addition to the red onion tarte tatin. These tiny flower buds are a good source of antioxidants and can help improve digestion, improve liver health and promote healthy skin.

lemon juice and red wine vinegar

The acidity of lemon juice and red wine vinegar gives the Tarte Tatin a piquant note. Both ingredients are rich in vitamin C and other antioxidants, which support immune function and collagen production and may have a protective effect against chronic diseases.

Extra virgin olive oil

Using extra virgin olive oil in this recipe not only ensures delicious taste but also provides health benefits. It is a rich source of heart-healthy monounsaturated fats and contains powerful antioxidants that may reduce inflammation, lower the risk of heart disease and support brain health.

By incorporating these nutritious ingredients into your red onion tarte tatin, you can enjoy a delicious dish while benefiting from the valuable nutrients. It’s an excellent way to make your meals not only delicious, but also health-conscious!

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