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Vegetarian Recipes

Caramelized Onion and Eggplant Puff Pastry Tart

Caramelized Onion & Eggplant Puff Pastry Tart with Kalamata Olives, Roasted Red Peppers & BasilThis vegetarian Caramelized Onion and Eggplant Puff Pastry Tart recipe is finished with Kalamata olives, roasted red peppers, basil, and cheese. Yum!

Quadrifecta of Deliciousness

There are a few ingredients that improve just about any dish you add them to:

  • Truffle Oil
  • Caramelized Onions
  • Olives
  • Roasted Red Peppers
  • Basil

Unfortunately, this Caramelized Onion & Eggplant Puff Pastry Tart does not have truffle oil. (Although I suppose if you really wanted to, you could add some. I mean, it’s a free country, right? Do what you want!) But! It does have caramelized onions, olives, roasted red peppers, and basil. It’s a veritable quadrifecta of deliciousness.

Rosa Blanca & Little Finger Eggplant
After I made this Leek & Olive Tart from Rikki Snyder’s food photography blog, I had a leftover puff pastry sheet sitting in the freezer, just begging to be made into something awesome. My little finger eggplants have been producing like crazy, so I roasted two of those, along with a small rosa blanca eggplant from the farmers market, as a topping. Everything else was simply what I had in the refrigerator that needed to be used. With a thrown-together recipe like this, there’s usually a high failure rate (at least in my kitchen, there is), so I piled on the toppings and crossed my fingers.

About the Recipe

I try hard to make most of my recipes really easy, but this one does have quite a few steps to it. Is it worth it? OH YES IT IS WORTH IT. After my first bite, I turned to my husband and said, “Whoa. I think this is one of the best things I’ve ever made.” And then my husband took his first bite and turned to me and replied, “No, this is the best thing you’ve ever made. You are amazing.”

Caramelized Onion & Eggplant Puff Pastry Tart with Kalamata Olives, Roasted Red Peppers & Basil [close]
See guys? Best thing I ever made. But it’s not so much because I’m amazing. (Although you’re welcome to think that I’m amazing.) It’s because when you add caramelized onions, olives, basil, or roasted red peppers to anything, it’s going to be delicious. There’s just no way around it.

Caramelized Onion & Eggplant Puff Pastry Tart Recipe

Caramelized Onion and Eggplant Puff Pastry Tart

A puff pastry crust topped with caramelized onions, roasted eggplant, Kalamata olives, and roasted red peppers. So much deliciousness!
Prep Time: 1 hour
Cook Time: 15 minutes
Total Time: 1 hour 15 minutes
Servings: 4


  • olive oil mister or cooking spray
  • 2 small or baby eggplants, halved lengthwise and cut into 1/4-inch slices
  • salt and pepper to taste
  • 1 tbsp olive oil
  • 2 onions thinly sliced
  • 1 puff pastry sheet rolled into a large rectangle (about 9 x 12, but no need to be precise)
  • 1/2 cup shredded mozzarella or Italian-blend cheese
  • 1/4 cup quartered Kalamata olives
  • 1/4 cup coarsely chopped roasted red peppers I used the jarred kind
  • 1/4 cup basil sliced into ribbons


  • Preheat oven to 425°F.
  • Spray a rimmed baking sheet with olive oil or cooking spray. Place eggplant slices onto sheet and spray tops with additional olive oil. Season with salt and pepper and roast for 20–30 minutes or until softened and just beginning to brown, turning slices over halfway through cooking time. Remove from oven and set aside. Lower oven temperature to 400°F.
  • While eggplant is baking, start caramelizing the onions. Heat olive oil in a large skillet over low heat. Add onions and a pinch of salt. Allow onions to slowly caramelize, stirring occasionally at first and more frequently once onions begin to brown. Depending on your stove, this could take anywhere between 30 minutes to an hour. Be patient—it's worth it! Remove from heat.
  • Place rolled-out puff pastry dough onto a baking sheet that's been lined with parchment paper. Bake for 10 minutes or until golden brown. Remove from oven and use a spoon or spatula to push down the center of the crust, leaving about a 1-inch margin on all sides.
  • Spread caramelized onions onto crust. Top with cheese, then roasted eggplant slices, olives, and red peppers. Return to oven and bake 5 minutes, or until cheese has melted. Scatter basil ribbons onto tart just before serving.


Serving: 1/4 of tart
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  • Reply
    The Mrs @ Success Along the Weigh
    July 26, 2012 at 9:46 am

    This looks like heaven in a puffy, pillowy crust. Enough that I might actually try it even with eggplant in it! HA!

    • Reply
      July 26, 2012 at 3:43 pm

      Well, if you’re gonna be that way, you could always sub out the eggplant. 😉

  • Reply
    Liz @ A Nut in a Nutshell
    July 26, 2012 at 11:07 am

    Oh that does look exceptionally tasty!

    • Reply
      July 26, 2012 at 3:41 pm

      It is! If I do say so myself. And I do.

  • Reply
    B @ Crags and Veggies
    July 26, 2012 at 11:14 am

    That looks great!! I’m so jealous of your little eggplants; they’re my favorite kind and I can’t find them right now.

    • Reply
      July 26, 2012 at 3:41 pm

      I will mail some to you–I have more than I know what to do with! Eggplants must really love the climate here. I could never get them to grow in Wisconsin, but here, they grow like crazy.

  • Reply
    Dee @ Cocktails with Mom
    July 26, 2012 at 12:09 pm

    Oh my…why do you have to make everything look so GOOD! I don’t eat eggplant but would consider eating this.

    • Reply
      July 26, 2012 at 3:39 pm

      There are so many other good things on here, you probably won’t even notice the eggplant!

  • Reply
    Kelly @ Texas Type A Mom
    July 26, 2012 at 12:17 pm

    Ooh that looks good! There’s just something about caramelized onions that wins me over every time!

    • Reply
      July 26, 2012 at 3:39 pm

      Caramelized onions are one of my favorite things ever. It’s a pain waiting for them to cook, but it’s so worth it.

  • Reply
    July 26, 2012 at 4:13 pm

    This is something I would probably never make for myself, because (suprisingly enough) I tend not to use ingredients like caramelized onions, olives, or roasted red peppers in my cooking! But you’ve definitely piqued my interest now – even though I’m not a huge fan of olives, that tar looks delicious!

    • Reply
      July 26, 2012 at 4:20 pm

      I think I may overuse caramelized onions, olives, and roasted red peppers. 🙂 I guess we all have those go-to ingredients that we rely upon!

  • Reply
    Jackie @ The Beeroness
    July 26, 2012 at 8:34 pm

    This is beautiful. So prefect for a summer dinner.

    • Reply
      July 27, 2012 at 10:08 am

      …and it tastes even better than it looks!

  • Reply
    Brenda Williams
    July 26, 2012 at 10:44 pm

    This looks so good. You have the best ideas ever!

    • Reply
      July 27, 2012 at 10:05 am

      I think you can add caramelized onions to anything and it will be delicious!

  • Reply
    July 27, 2012 at 10:22 am

    This does look amazing! I would also add cheese to the list of items that always make a dish taste good, especially melted cheese .. mmmm!

    • Reply
      July 28, 2012 at 7:12 pm

      Yes, cheese! Especially melted cheese, and also Parmesan cheese. 😀

  • Reply
    July 27, 2012 at 11:53 am

    That looks so delicious…and wouldn’t you know…I have a few sheets of puff pastry left in my freezer too. Now I have to get all the other ingredients! Sunday dinner will be delicious this week. Thanks for the recipe post.

    • Reply
      July 28, 2012 at 7:10 pm

      I hope you like it if you make it! It’s definitely a good Sunday dinner–you need a little time to put it all together, but it’s worth it. 🙂

  • Reply
    July 28, 2012 at 12:00 am

    Look at all those colors! Yummy!

  • Reply
    July 28, 2012 at 2:11 pm

    Did you roast the red peppers ahead of time?

    • Reply
      July 28, 2012 at 6:42 pm

      I used jarred because I had them on hand; if you use fresh red peppers, you can roast them with the eggplant. I just changed the ingredients to note this–thanks! 🙂

  • Reply
    July 28, 2012 at 8:02 pm

    I can’t agree on the olives, but the rest of it looks truly amazing! I love the combination of eggplant and caramelized onions. And the finger eggplants are cool! Never seen or heard of them.

    • Reply
      July 29, 2012 at 9:29 pm

      Little finger eggplants are awesome–because they’re so small, it only takes a few days for them to be ready to eat! And the plants produce a LOT of little eggplants.

  • Reply
    July 29, 2012 at 3:50 am

    I always enjoy looking at the pictures of your recipes – so professional looking! 🙂

  • Reply
    April Decheine
    July 29, 2012 at 11:58 am

    That looks amazing, I have some eggplant in the garden I am getting ready to pull off the plant!

    • Reply
      July 29, 2012 at 9:15 pm

      I’m getting new eggplant almost everyday right now. So! Much! Eggplant!

  • Reply
    July 30, 2012 at 8:16 pm

    What a gorgeous picture! I can’t believe I’ve never cooked with puffed pastry. This needs to change.

    • Reply
      July 31, 2012 at 8:04 am

      The olive & leek tart I made from another blog a few weeks ago was actually the first time I used puff pastry myself!

  • Reply
    July 30, 2012 at 9:46 pm

    Mmmm, I have been dreaming up a savory puff pastry tart in my mind for a few months now but have never gotten around to making it (although when I do it will include Brussels sprouts and bacon, that much I know for sure, haha). Your recipe is making me think I need to make something like this soon! Yum!

    • Reply
      July 31, 2012 at 8:01 am

      You should! Puff pastry is SO GOOD. 😀

  • Reply
    August 2, 2012 at 12:45 am

    I recommend to use feta cheese instead of the italian cheese. It gives a great rich taste to the whole combination!

    • Reply
      August 3, 2012 at 4:24 pm

      I knew someone would say that! I don’t like feta, which is why I didn’t use it. 🙂

  • Reply
    August 21, 2012 at 11:57 am

    Oh this looks and sounds divine! I love using puff pastry!

  • Reply
    Lin Murdoch
    July 19, 2014 at 5:56 am

    Hi! This is the first time I saw your site. Everything looks and sounds delicious! I have a few quick questions… What is puff pastry? Where would I find it in the grocery store? Would it be found with the refrigerated dinner rolls in a rolled up container, or do you make it? Do you know if it’s vegan? Thanks so much!

    • Reply
      Kiersten Frase
      July 21, 2014 at 3:59 pm

      Puff pastry is usually found in the freezer section at the grocery store, but unfortunately, I think it’s almost always made with butter. If you’re looking for a vegan alternative, you can put this together on a pizza crust or flatbread instead.

      • Reply
        Lin Mirdoch
        July 21, 2014 at 9:49 pm

        Tank you. I will try the pizza dough.

  • Reply
    Abby Schubert
    June 26, 2019 at 11:01 am

    5 stars
    Super tasty! I’m not an olive or pepper gal, but I added some halved heirloom cherry tomatoes and some garlic. Life. Changed.

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