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Mini Onion Tarts with Zucchini and Balsamic

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If you’re looking for a quick and tasty appetizer, these Mini Onion Tarts with Zucchini and Balsamic are the perfect choice. A crispy puff pastry shell filled with caramelized onions, zucchini, and a hint of balsamic vinegar and honey, they’re a crowd-pleaser for any occasion. Whether you’re serving them at a game day gathering or as a tasty addition to a larger spread, these tartlets will steal the show!

Mini onion tarts with zucchini and balsamic on board with fresh thyme.

Mini Onion Zucchini Tarts Recipe

The flavor profile of these mini onion zucchini and balsamic tarts is absolutely divine, with the richness of the onions enhanced by the tang of balsamic vinegar and the earthy flavors of fresh zucchini.

Whether you are hosting a dinner party, serving snacks for your friends, or looking for a new dish to bring to your next holiday gathering, these mini savory tarts are a fantastic choice. They’re bite-sized, making them the perfect party appetizer. And the best part? They’re incredibly easy to make, yet sophisticated enough to be the star of the show.

Not only are they visually appealing but they’re also packed with flavor. The crispy puff pastry tart crust provides the perfect base for the savory filling, while the honey and balsamic vinegar adds a layer of depth and complexity to the tartlets.

Can I make these onion tarts ahead of time?

Yes, these tarts can be made ahead of time. Bake them and store them in an airtight container in the fridge for 2-3 days. Reheat them in the oven before serving to bring back their crispy texture.

Puff pastry mini onion tarts.

Can I add different ingredients to the tart filling?

Yes! While the combination of onions, zucchini, and balsamic vinegar is perfect, you can customize the filling by adding other ingredients like mushrooms, spinach, or even a sprinkle of shredded cheese.

Can I use a different type of pastry for these tarts?

Yes, you can substitute puff pastry with other types of pastry like shortcrust pastry or phyllo pastry if you prefer a different texture or if puff pastry is not available. Keep in mind that the texture may change slightly, but the overall flavor will still be delicious!

Mini onion tartlets recipe.

How to store mini onion tarts

Store the tartlet in an airtight container in the fridge for 3-4 days. To freeze, allow them to cool completely, then store in a freezer-safe container. When ready to enjoy, reheat from frozen in the oven at 180°C (350°F) for 10-15 minutes, or reheat in the fridge and bake for 5-7 minutes. Avoid microwaving as it may make the pastry soggy.

Mini onion tarts on wooden board.

Why You’ll Love This Recipe

These mini onion tarts are light yet flavorful, offering a unique twist with the earthy sweetness of balsamic vinegar and the fresh taste of zucchini. Here’s why they make the perfect appetizer:

  1. Versatile: Ideal for game day appetizers, holiday parties, or even as a light dinner with a side salad.
  2. Easy to Make: With just a few simple ingredients, you can whip up these tartlets in 35 minutes.
  3. Crowd-Pleaser: The combination of savory onions, fresh zucchini, and the sweet richness of balsamic vinegar ensures these tartlets will be loved by everyone.
  4. Customizable: You can easily adapt the recipe to include other veggies or top them with a sprinkle of your favorite cheese.
Tartlets on plate.

If you enjoy this recipe, please consider leaving a ⭐️ star rating and a comment review below. I love to hear what you think and it’s much appreciated. Thank you! Your email address will not be published. Sam x

Mini onion tarts with zucchini honey and balsamic in puff pastry.

Mini Onion Tarts with Zucchini and Balsamic

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These Mini Onion Tarts with Zucchini and Balsamic are an easy appetizer made with puff pastry, onions, zucchini, and balsamic. Perfect for any gathering!
Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings 24 mini tarts

Ingredients
  

  • 2 puff pastry sheets, thawed
  • 1 Tbsp butter, or vegetable oil
  • 2 large red onions, peeled and diced
  • 1 tsp garlic powder
  • 1 tsp dried Italian seasoning
  • 2 sprigs fresh thyme
  • ¼ tsp ground paprika
  • Salt and pepper, to taste
  • 2 Tbsp balsamic vinegar
  • 2 tsp honey
  • 1 medium-sized zucchini, grated/shredded

Method
 

  • Preheat Oven and Prepare Muffin Pan: Preheat oven to 400°F (200ºC). Grease a 24-hole mini muffin pan with cooking oil spray or butter.
  • Prepare Pastry Shells: Using a medium-sized round cookie cutter or one that is slightly bigger than your mini muffin holes, cut out a round of thawed puff pastry. Gently place each round into the muffin hole, pushing down to mold the pastry into the hole. Squeeze the sides of the pastry to make it fit better. Repeat this process with the remaining pastry sheets and set aside.
  • Sauté Onions: In a medium-sized saucepan over high heat, melt the butter or heat the oil if using. Add diced onions and sauté until translucent on medium-high heat, stirring occasionally.
  • Add Seasonings: Reduce the heat to low and to the onions, add garlic powder, Italian seasoning, thyme leaves (stalks removed), paprika and season with salt and pepper. Mix well to combine and sauté on medium heat for a further 1 minute until fragrant.
  • Add Balsamic Vinegar: Pour in balsamic vinegar and mix well.
  • Stir in Honey and Cook: Stir through the honey and cook for a further 3-5 minutes on medium heat, or until onions are tender and browned. Turn off heat.
  • Add Grated Zucchini: Stir through the grated zucchini, mixing well to combine.
  • Assemble Tartlets: Spoon the onion mixture into the pastry shells, about 2 teaspoons per tartlet, filling them to the top.
  • Bake: Bake for 8-10 minutes, or until the pastry is golden and crisp.
  • Cool and Serve: Let the tarts cool in the pan for 2 minutes. Remove and serve immediately, or transfer to a wire cooling rack for later. Enjoy!

Nutrition

Calories: 125kcalCarbohydrates: 11gProtein: 2gFat: 8gSaturated Fat: 2gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gTrans Fat: 0.02gCholesterol: 1mgSodium: 56mgPotassium: 53mgFiber: 1gSugar: 1gVitamin A: 47IUVitamin C: 2mgCalcium: 8mgIron: 1mg

Notes

Store: In an airtight container, refrigerated, for 3-4 days.
Freeze: Allow the tartlets to cool completely, then store them in a freezer-safe container for up to 3 months.
Thaw: When ready to enjoy, thaw the tartlets in the fridge for several hours or overnight.
Reheat: Reheat in the oven or air fryer at 180°C (350°F) for 10-15 minutes, or bake for 5-7 minutes if thawed. Avoid microwaving as it may make the pastry soggy.

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2 Comments

    1. Hi Olivia, apologies or my delayed response. I don’t see why that mini filo shells wouldn’t work for the delicious tartlets! The onion filling would pair perfectly with crispy filo pastry and the filling isn’t too wet that they would sog through the pastry. Hope that helps! 🙂

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