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Home / Recipes

Caramelized Onions and Mushrooms Tart with Blue Cheese

1 hour 5 minutes
4.63 from 8 votes
15 Comments
Jump to RecipePrint Recipe
  • 165
by: Joanna Cismaru
03.29.22

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Caramelized Onions and Mushrooms Tart with Blue Cheese – simple tart made with puff pastry topped with caramelized onions, mushrooms and blue cheese.

Caramelized Onions and Mushrooms Tart with Blue Cheese

Easy Onion And Mushroom Tart

I have a secret to share with you.

I love caramelized onions, as in caramelized onion flatbread, as in this tart here. But I also love mushrooms. And blue cheese. This tart here is a win win.

Are you guys scared of making tarts? They’re so easy because the easiest way to make them is using puff pastry, then you can top them with anything you want, fruits, custard tarts, and savory tarts like this one. You’ll find many such tarts here on Jo Cooks.

So this tart here. Yum! Caramelized onions and mushrooms in butter and olive oil, lightly seasoned with salt and pepper, you don’t need much salt because the blue cheese is fairly salted, puff pastry and one of my favorite cheeses, blue cheese. I know a lot of people are not fans of blue cheese but you have to give it a try, it’s delicious. When you marry all these great ingredients together you have a great marriage of amazing flavors resulting in one delicious tart.

Caramelized Onions and Mushrooms Tart with Blue Cheese

More Delicious Recipes To Try

  • Chocolate Nut Tarts
  • Pear and Almond Cream Tart
  • Caramelized Onion Flatbread
  • Blue Cheese Stuffed Mushrooms
  • Fig Tart with Pecans and Goat Cheese

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caramelized onion and mushroom tart

Caramelized Onions and Mushrooms Tart with Blue Cheese

4.63 from 8 votes
Prep: 10 mins
Cook: 55 mins
Total: 1 hr 5 mins
Author: Joanna Cismaru
Serves: 4 servings
Print Pin Rate
Caramelized Onions and Mushrooms Tart with Blue Cheese – simple tart made with puff pastry topped with caramelized onions, mushrooms and blue cheese.

Ingredients

  • 1 tablespoon olive oil
  • 1 large onion sliced
  • 1 tablespoon butter
  • 1 pound mushrooms cleaned and sliced
  • salt and pepper to taste
  • ¼ cup white wine
  • 1 sheet puff pastry thawed
  • ½ cup blue cheese
US Customary – Metric

Instructions

  • Heat the oil and butter in a pan. Add the onion and cook until it starts to caramelize, about 20 minutes.
  • Add the mushrooms and saute until they start to caramelize, about 20 minutes.
  • Season with salt and pepper and add the wine, deglaze the pan and cook until it has evaporated.
  • Roll the puff pastry out to a 12×12 inch rectangle.
  • Preheat oven to 400 F degrees.
  • Score a line around the puff pastry 1 inch from the edge.
  • Spread the blue cheese over the middle of the puff pastry and then spread with the onion and mushroom mixture.
  • Bake until the a the pastry is golden brown, about 15-25 minutes.

Nutrition Information:

Serving: 1servingCalories: 501kcal (25%)Carbohydrates: 35g (12%)Protein: 12g (24%)Fat: 35g (54%)Saturated Fat: 11g (69%)Polyunsaturated Fat: 4gMonounsaturated Fat: 18gTrans Fat: 1gCholesterol: 20mg (7%)Sodium: 355mg (15%)Potassium: 493mg (14%)Fiber: 3g (13%)Sugar: 4g (4%)Vitamin A: 217IU (4%)Vitamin C: 4mg (5%)Calcium: 107mg (11%)Iron: 2mg (11%)
Course:Appetizer
Cuisine:American
Keyword:mushroom tart, onion and mushroom tart
Tried this recipe? Rate it belowtag @jocooks on instagram and hashtag it #jocooks!
  • 165

Meet Joanna Cismaru

I’m Joanna (Jo for short) and this is my blog where I share with you my culinary adventures. Here you will find a variety of recipes using simple everyday ingredients and creating wonderful, delicious and comforting meals, including some decadent desserts.

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Comments

  1. Yvonne says

    May 11, 2018 at 10:01 pm

    5 stars
    I know this is fabulous, I’ve made it before but always just the day I serve it. This time I need to prepare for 30 guests. How far in advance may I cook the onion, cheese & mushroom mixture? I’d like to used this as a bruschetta topping.
    Thank you,
    Yvonne

    Reply
    • Joanna Cismaru says

      May 13, 2018 at 9:13 pm

      The onion cheese and mushroom mixture, could probably be made a couple days before, don’t think I’d do it earlier than that.

      Reply
  2. bristol plasterer says

    May 20, 2015 at 11:38 am

    This looks nice. Bet it tastes delicious to. Thanks for sharing.

    Simon

    Reply
  3. Lori @ Foxes Love Lemons says

    December 3, 2013 at 9:28 pm

    I love carmalized onions. I love mushrooms. I love blue cheese. And I LOVE LOVE LOVE savory tarts, especially for entertaining. Pinning this!

    Reply
    • jo says

      December 4, 2013 at 1:07 am

      Thanks Lori!

      Reply
  4. Abbe @ Abbe's Cooking Antics says

    December 3, 2013 at 6:27 pm

    Oh. Dear. GOD… I want this for my face! It hits all the right notes, Jo. I LOVE mushrooms, and would never have thought to include them on a tart with onions like this. It’s so easy to get stuck in your ways when cooking. This is a lovely idea and I’n going to copy it, and soon 😉

    Reply
    • jo says

      December 4, 2013 at 1:07 am

      Go for it, hope you like it. 🙂

      Reply
  5. Mushrooms Canada says

    December 2, 2013 at 9:01 pm

    Simple ingredients and packed with a flavour punch. This is certainly my kind of meal! Thanks for sharing…

    -Shannon

    Reply
    • jo says

      December 3, 2013 at 2:13 am

      Thanks Shannon!

      Reply
  6. Judy says

    December 1, 2013 at 4:49 pm

    Did I tell you I baked a cake?

    Reply
    • jo says

      December 1, 2013 at 6:08 pm

      You did not! Good for you, did it turn out good?

      Reply
      • Judy says

        December 2, 2013 at 12:16 am

        I did. I did and it turned out great. It was an orange chiffon so not hard but it was nice and light and springy and finished in five minutes. There. I’ve started. I need to change all my baking tins. They must be ancient. They’re still from England!!

      • jo says

        December 2, 2013 at 4:05 am

        That’s great Judy, I love those kind of cakes. 🙂

  7. amallia says

    December 1, 2013 at 10:49 am

    wow, great recipe idea, thanks for sharing, I’ll try it. 🙂

    Reply
    • jo says

      December 1, 2013 at 2:31 pm

      Thanks Amalia 🙂

      Reply

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I'm Joanna (Jo for short) and this is my blog where I share with you my culinary adventures. Here you will find a variety of recipes using simple everyday ingredients and creating wonderful, delicious and comforting meals, including some decadent desserts.

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