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–+ servings

French Onion Tart Recipe With Balsamic and Thyme

A delicious vegan French onion tart recipe featuring caramelized onions, flaky puff pastry, and simple ingredients. A perfect appetizer for any occasion!
5 from 2 votes
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Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Course Appetizer
Cuisine American, European, French
Servings 9

Ingredients
  

  • 1 sheet puff pastry, thawed
  • 1 small yellow onion
  • 4 sprigs fresh thyme or a few sprinkles of dry thyme
  • extra virgin olive oil
  • maple syrup
  • balsamic reduction
  • salt & pepper to taste

Instructions
 

Prep

  • Pre-heat the oven to 350°.
  • Cut the onion into thin circular slices. Thinner is better as they will cook faster in the oven.
  • If your puff pastry doesn't already come in a rolled out sheet, roll it out into a fairly thin layer. See photos for reference.
  • Cut the puff pastry into 9 equal squares. Make sure that the onion slices will be fully covered by the puff pastry and adjust the amount or size if needed.

Assembly

  • On a baking sheet lined with parchment paper, drizzle 9 spots with a little olive oil, balsamic reduction, maple syrup and fresh thyme. See photos above for reference, you'll want just enough to fully cover the onion slices.
  • Place the onion slice on top of the olive oil mixture and sprinkle with salt and pepper to taste.
  • Cover each onion with a square of the puff pastry and press all the edges down to seal them. Brush the tops of the pastry with melted vegan butter if desired.

Baking

  • Bake at 350 for 15-20 minutes or until the pastry is golden brown. Flip them over using a spatula, you may have to shimmy the spatula a little to ensure it all stays together. Serve warm and enjoy!

Notes

Cook Time: Check the package instructions on your puff pastry box and adjust the cook time if needed. Make sure the pastry is puffed up and golden brown to ensure it's cook all the way through. 
Onion to Puff Pastry Ratio: The onion should cover most of the puff pastry for the best flavor. Make sure they're isn't a lot of extra dough hanging over the edges. Adjust the size of the puff pastry if needed to match the size of your onion slices. See photos for reference. 
Note: Nutritional information is approximate and may vary depending on the brands and specific ingredients used.

Nutrition

Serving: 50g | Calories: 120kcal | Carbohydrates: 12g | Protein: 2g | Fat: 7g | Saturated Fat: 1g | Polyunsaturated Fat: 0.5g | Monounsaturated Fat: 4g | Sodium: 80mg | Potassium: 50mg | Fiber: 1g | Sugar: 5g | Vitamin A: 10IU | Vitamin C: 2mg | Calcium: 10mg | Iron: 0.5mg
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