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Published: | Last Updated: | Author: Lois

Rustic Tomato Zucchini Tart

Rustic Tomato Zucchini Tart is filled with caramelized onions, garden fresh zucchini, tomatoes and Parmesan cheese on top of pastry dough. Let me show you how to make another one of my easy zucchini recipes that’s perfect for a light dinner or fancy enough for company.

I have a delicious recipe for you today! The inspiration for this Tomato Zucchini Tart came after a walk through our garden. Our garden is producing nicely this year.  Which makes me very happy.

I couldn’t wait to use both the tomato and zucchini and made this delicious Rustic Tomato Zucchini Tart for dinner.  It was the perfect light summer evening recipe to serve with a large tossed salad.

Here are the tomatoes that made such a delicious tasty recipe.  Aren’t they so cute?  I know, I know, tomatoes aren’t really “cute.”

Grape tomatoes on vine being held in the air.

Helpful Kitchen Tools

Ingredients

Exact measurements are listed below in the recipe card. Make sure you scroll down to print and save the recipe for later!

  • Butter
  • Onions, sliced thin
  • Zucchini, sliced thin
  • Grape tomatoes, about 2 cups
  • 1/4 cup Parmesan cheese
  • 1 cup Mozzarella cheese
  • Basil
  • Parsley
  • 1 egg mixed with a little milk
  • Single recipe pie crust; homemade or store bought.

Instructions

Using either a very sharp knife or a mandoline slicer, slice the zucchini into rounds. For best results, you want the zucchini slices to be thin and evenly sliced as possible. Which is why I recommend using a mandoline slicer.

Slice the grape tomatoes in half, lengthwise. That way they won’t roll around on the tart when you’re moving it into the oven.

Set the vegetables aside as you prepare the onions.

Sliced zucchini into rounds using a mandoline slicer from WOS

Make sure you check out my post on how to make an easy pie dough recipe.  I have step by step photo instructions too!

Roll out the pie dough and fit it into an rectangle baking tray; set aside. Heat the butter in a heavy skillet. Then add the sliced onions and cook until they are soft and golden brown; about 20 minutes.

Spread the mozzarella cheese on top of the pie dough. Add the cooked onions on top of the cheese. Arrange the sliced zucchini and then the tomatoes on top.

Cooked onions on top of mozzarella cheese on top of pie dough.

Arrange the zucchini and tomatoes on top and sprinkle with the Parmesan cheese and herbs.  

Brush the beaten egg and milk mixture over the entire pie crust. Bake in a preheated 425 degree oven for about 20 minutes or until the crust is golden brown.

Tomato Zucchini Tart before baking

Frequently Asked Recipe Questions

How do you know when zucchini goes bad?

You’ll know a zucchini is no longer fresh when you slice into it and the inside flesh is stringy. Also the skin will be wrinkled. Do not eat the zucchini if it is moldy.

What is the best surface to roll out pie dough?

I like to roll pie dough out on parchment baking sheets. That way I can easily move the pie dough to the appropriate pan by simply lifting the edges of the parchment paper.

Why does my pie crust dough fall apart when rolling out?

If you find your pie dough is breaking apart and crumbling, it’s probably too dry. You can fix this problem by lightly sprinkling the dough with chilled cold water over the surface and then working the water into the dough.

Tried this recipe? Let me know in the comments and don’t forget to rate it!

Tomato Zucchini Tart with sliced zucchini.

Like this recipe? Try these other zucchini recipes:

Rustic Tomato Zucchini Tart

Rustic Tomato Zucchini Tart

Yield: 8 to 10 servings.
Prep Time: 20 minutes
Cook Time: 20 minutes
Total Time: 40 minutes

Rustic Tomato Zucchini Tart filled with caramelized onions, garden fresh zucchini, tomatoes and Parmesan cheese on top of pastry dough. 

Ingredients

  • 4 tbs butter
  • 2 large onions sliced thin
  • 1 medium sized zucchini sliced into thin rounds
  • 2 cups grape tomatoes
  • 1/4 cup Parmesan cheese
  • 1 cup Mozzarella cheese
  • 1 tbsp fresh chopped basil
  • 1 tbsp fresh chopped parsley
  • 1 egg mixed with a little milk
  • 1 recipe pie dough; homemade or store bought

Instructions

    1. Roll out the pie dough and fit it into an rectangle baking tray that's been lined with parchment paper; set aside.
    2. Using a mandoline slicer, slice the zucchini into rounds.
    3. Slice the grape tomatoes in half; lengthwise.
    4. Set the vegetables aside while you prepare the onions.
    5. Heat the butter in a heavy skillet.
    6. Add the sliced onions and cook until they are soft and golden brown; about 20 minutes.
    7. Spread the mozzarella cheese on top of the pie dough.
    8. Add the cooked onions on top of the cheese.
    9. Arrange the sliced zucchini and then the tomatoes on top.
    10. Sprinkle the Parmesan cheese on top of the vegetables and then the basil and parsley.
    11. Brush the beaten egg and milk mixture over the entire pie crust.
    12. Bake in a preheated 425 degree oven for about 20 minutes or until the crust is golden brown.

Notes

Serve this tart warm or room temperature.

Store any leftovers in an air-tight container in the refrigerator for up to 3 days.

Recommended Products

As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases.

Nutrition Information:
Yield: 8 Serving Size: 1
Amount Per Serving: Calories: 283Total Fat: 18gSaturated Fat: 9gTrans Fat: 0gUnsaturated Fat: 8gCholesterol: 55mgSodium: 336mgCarbohydrates: 22gFiber: 2gSugar: 3gProtein: 8g

The nutrition information is calculated automatically. I cannot guarantee its accuracy. If this data is important to you, please verify with your trusted nutrition calculator.

© Lois
Cuisine: Italian / Category: Side Dishes

This recipe has been updated since it first appeared in 2014 with new photos and a new printable recipe card that includes nutritional information. I hope you enjoy the updates as much as I enjoyed working on them! 

Rustic Zucchini Tomato Tart from Walking on Sunshine Recipes.

About Lois

Originally from Queens, NY, Lois now calls northeastern PA home. You can find her blogging over at Walking on Sunshine where she shares a little of her life, but more importantly what’s for dinner at her house tonight.

Comments

  11. HeiLin (Heidy McCallum) says

    Thank you so much for sharing your awesome blog post on our link party we formerly co-hosted for 23 weeks, (The Weekend Social) I just wanted to update you to our new link party #PureBlogLove. It runs every Thursday 8 pm est-Sunday nights at midnight. The other girls are still hosting the former party on their pages so don't forget drop by and visit them as well. I hope to see you this week at our new one.
    Have a fantastic night
    Heidy L. McCallum

    Reply

  12. Mary Beth says

    This truly looks absolutely delicious! My son will be turning 16 this week (sob) and I am going to make this for his family party. I think everyone will love it. Thank you so much for sharing at Project Inspire{d} ~ your project was one of our features this week. I hope to see you for tonight's party!

    Reply

  16. Amy (So There, by Amy) says

    Can I ask you… Do you use Blogger?
    How do you get this nice comment box to appear, instead of only the default Post Comment Text?
    Do you know?
    Shoot me an email if you don't mind!! Thanks so much! 🙂
    Happy Sunday!

    Reply

  23. mickeydownunder says

    G'day and thanks for sharing at the #SayGdayParty! Your tart looks delish Lois! Pinned!
    Please make sure to stop by if you haven't already and visit some other people also attending the party and would be great if you could answer one of my questions or two! Thank you! Cheers! Joanne @What's On The List

    Reply

  24. Julie Murphy says

    They say great minds think alike, as I recently made a Tomato and Cheese Crostata! Very similar to your recipe here and I didn't even see the Pioneer Woman's episode with her Tomato Tart. Crostata or tart, as either one definitely makes for a delicious and light summer or fall-inspired meal 🙂
    Julie@ Sweet and Spicy Monkey

    Reply

  29. Cathy McInnes says

    This looks amazing! I get so excited to get the tomatoes from my garden! 🙂 I have enjoyed reading your blog and your story! Saying hello from Share you stuff Tuesday and now following you on Pinterest and Twitter 🙂
    Cathy @ three kids and a fish

    Reply

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