Puff pastry onion tart/Caramelized onion tart

Shiny onions on a pastry bed!

When caramelized onion meets rich puff pastry in an oven, only amazing things can happen!

This is a simple tart but the taste is buttery delicious!Onion puff

I have always baked with store bought puff pastry and recently I made a bold attempt to make some pastry at home.

To try that home made pastry dough, I baked  a tart. I took a 1/4 of the pastry made here: pastry from scratch. It was testing the quality of the puff pastry I made, patiently rolling, folding and chilling. This can easily be done using store bought puff pastry too. So don’t be disheartened if you do not want to go through the long process of making it at home.

This is a super easy tart with caramelized onions and a few more ingredients and is fit for kids and adults alike. I used only a small part of the dough so the amount of butter intake is decreased. Okay, that is no justification! This in fact, is a high fat treat…no doubt! Just find an excuse to indulge! Maybe invite those friends who hit the gym meticulously.

Ingredients for Caramelized Onion

  • 3 tbsp vegetable oil
  • 3 large red onions
  • 1/2 tsp salt
  • 1 tsp sugar
  • 1 tsp balsamic vinegar
  • 1 tsp dried rosemary
  1. Peel skin of onions and cut them into halves.
  2. Slice them long and thin.
  3. In a heavy bottom pan add vegetable oil and cook onion by sprinkling salt and sugar.
  4. On constant stirring, onions caramelize and turn deep brown  (Good caramelizing takes 40-50 minutes on medium to low heat stirring frequently.)
  5. Sprinkle balsamic vinegar and mix well.
  6. Set the onions aside to cool.

Caramelized onionMaking the tart


  • Puff pastry as needed
  • Caramelized onion divided
  • 1 egg mixed with 1 tsp water
  1. Take an appropriate amount of puff pastry dough to make 6 tarts and allow it to thaw in the refrigerator overnight or alternatively at room temperature for 2 hours.
  2. In the meantime, line baking tray with a parchment paper.
  3. Preheat the oven to 400 ° F.
  4. Roll out dough that is at room temperature to a slightly less than 1/8 inch thick rectangle.
  5. Mark and cut the puff pastry dough with a very sharp knife, pizza wheel or sharp edged container into equal sized squares.
  6. Shape puff pastry by pressing the center gently with the finger forming a flattened center and slightly raised edge.
  7. Poke the center with the tines of the fork to prevent puffing.
  8. Put caramelized onion in the center and sprinkle with rosemary.
  9. Brush the edges with egg mixed with water. (This imparts a golden colour on baking.)
  10. Put oven rack in middle of the oven and bake pastry for 15-20 minutes until the edges brown.
  11. Check the pastries frequently because they become fully baked and browned in a short time
  12. Remove from oven,cool and release from parchment paper.
  13. Serve it warm.

shaping & filling Puff pastry tastes best when they are warm and fresh from the oven. This is a pastry distinguished for its lightness and flakiness. It has a signature elegance when baked. So this will become one of those recipes you will make again and again.

TartThis pastry puffed up too much. I should have rolled it into thinner pieces or reduced the number of folds. What do you think?

Onion tartsThe hardest part is waiting for this onion tart to cool down to start eating.

I think indulging in a tasty treat once in a while is no big crime as it goes ‘you only live once’. Enjoy!

I am linking this tart to party with Fiesta Friday #61

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About coconutcraze

I'm obsessed with coconuts!
This entry was posted in Baked, Breakfast, Brunch, Celebration, comfort food, Finger food, Pack-and-go snack, Pastry and tagged , , , , , , , . Bookmark the permalink.

39 Responses to Puff pastry onion tart/Caramelized onion tart

  1. Wow this look amazing. I’m also impressed that you made a pastry dough from scratch! Beautiful! I’d eat this any day.

    Liked by 1 person

  2. Malar says:

    Wow…this makes me drool 😀

    Liked by 1 person

  3. Jess says:

    Well done with that pastry, I’m very impressed. The combination of buttery flaky pastry made from scratch and caramelized onions? Say no more! Happy FF 🙂

    Liked by 1 person

    • coconutcraze says:

      Thank you, Jess! Very happy with this puff pastry. I would like to try other recipes using it. Fiesta Friday is a great platform to share our kitchen delights. Thanks to everyone working behind the scene!


  4. That looks amazing! Delicious!

    Liked by 1 person

  5. I love love love savoury tarts. Your pastry looks so super flaky. You have motivated me to make pastry from scratch.

    I can imagine how hard it is to wait for the tarts to be just warm enough to take that first bite and then the next and then the next.

    Liked by 1 person

  6. coconutcraze says:

    It is quiet easy and you will feel a great sense of satisfaction. I loved the experience and the taste! In fact, I did not wait for the others before taking my first bite! Crazy me!


  7. Sinfully Tempting says:

    Very impressive that you made your pastry from scratch. I’ve done it myself, so I know the work that goes into it. Kudos to you! Love the recipe, so happy to have found your blog at Fiesta Friday! 🙂

    Liked by 1 person

  8. This looks absolutely perfect. It looks mouthwatering and gorgeous

    Liked by 1 person

  9. Arasi Arumugam says:

    wow..wonerful .. puff pastries looks perfect and flaky than the store bought ones.

    Liked by 1 person

  10. Yum, these look delicious! Awesome that you made your own puff pastry!

    Liked by 1 person

  11. Lili says:

    You made some beautiful tasty tarts with your puff pastry Sridevi! And I like the square shape too… Nice! 🙂 P.S: That is a very flaky looking pastry!

    Liked by 1 person

  12. Looks like grabbing some and taste.. Perfectly baked tart

    Liked by 1 person

  13. Lovely flaky puff pastry Sridevi 🙂 They are absolutely gorgeous!

    Liked by 1 person

  14. Your puff pastry is perfect – all those layers are extremely coveted so don’t fold any less or roll any thinner!! In order for the middle not to rise as much, you should score a square in the middle (not cutting all the way through to the bottom) prick that with a fork a few times and then put the topping on. Thanks for sharing this with us and Happy Fiesta Friday!

    Liked by 1 person

  15. Loretta says:

    Gosh this is just wonderful Sridevi! I remember your last post on actually tackling puff pastry, and what a task it was!! You have it done just beautifully, and it’s good to see you return with one of your caramelized onion tarts. The layers are just perfect, I could easily eat a couple of those and be completely satisfied 🙂

    Liked by 1 person

    • coconutcraze says:

      I could feel the completion of that pastry making only after baking these tarts. These crispy, puffed tarts with soft onion topping was pure joy! I have been dreaming of it for long! Mission accomplished! :). Thank you for your lovely words, Loretta!


  16. Puff pastry + caramelized onions. Who can blame you??? Your tarts must me scrumptious! Thanks for being at FF!


  17. coconutcraze says:

    Oh, I can shamelessly say that I was proud of them! They are stylish little tarts to start off a nice party! Thank you, Margherita!


  18. Yum! These puff pastry tartlets are to die for! They look so elegant! I’ll just have to have a tea party so I can make your recipe. So good.


  19. coconutcraze says:

    Thank you, Shamim! Please go ahead and enjoy!


  20. Namrata says:

    omg! what a well layered gorgeous pastry… am sure it was flaky and delicious!


  21. coconutcraze says:

    Thank you, Namrata! Making this pastry is like dancing at a party…once you start there is no stopping and it is fun!


  22. Wow this tart is making me drooooool. .. fabulous this is ..


  23. This is just gorgeous! It looks so rich!


  24. coconutcraze says:

    Thank you very much! I made some yesterday for a friend and her family enjoyed it! It is fun to share this puff pastry! 🙂


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