This delectable vegan caramelized onion tart is a culinary masterpiece that combines the richness of caramelized onions with a creamy, dairy-free filling, all nestled within a flaky crust. The journey begins with a simple yet flavorful crust, crafted from a blend of all-purpose flour and cold vegan margarine or coconut oil. This foundation, when pre-baked to a golden perfection, provides the ideal canvas for the tart’s symphony of flavors.

The star of the show is the lusciously caramelized onions, thinly sliced and sautéed to a golden brown in olive oil. A touch of balsamic vinegar imparts a sweet and tangy note, elevating the onions to a state of caramelized perfection. These savory strands are then generously layered onto the awaiting crust, creating a fragrant and visually stunning base.

To complement the savory sweetness of the onions, the filling is a harmonious blend of vegan cream cheese, nutritional yeast, Dijon mustard, salt, and pepper. This velvety mixture not only adds a creamy texture but also enhances the overall flavor profile, creating a luxurious contrast to the caramelized onions.

As the tart bakes to golden perfection, the kitchen fills with an enticing aroma that signals the imminent delight. Once out of the oven, the tart is a vision of culinary artistry, with a crisp crust, creamy filling, and a crown of perfectly caramelized onions. Each bite is a symphony of textures and tastes – the buttery crust giving way to the creamy filling and the sweet, savory notes of the caramelized onions.

Serve this vegan caramelized onion tart as a show-stopping centerpiece at gatherings or slice it into elegant portions for an appetizer that promises to delight the taste buds. This recipe not only caters to a plant-based lifestyle but also showcases the tantalizing possibilities of vegan cuisine, proving that indulgence knows no bounds when it comes to compassionate cooking.

Vegan Caramelized Onion Tart


For the Crust:

  • 1 1/2 cups all-purpose flour
  • 1/2 cup vegan butter, cold and diced
  • 1/4 cup ice-cold water
  • A pinch of salt

For the Caramelized Onions:

  • 4 large onions, thinly sliced
  • 2 tablespoons olive oil
  • 1 teaspoon sugar (optional)
  • Salt and pepper to taste
  • 2 tablespoons balsamic vinegar (optional)

For the Topping:

  • 1/2 cup vegan cheese, shredded (optional)


  1. Prepare the Crust:
    • In a food processor, combine the flour, vegan butter, and salt. Pulse until the mixture resembles coarse crumbs.
    • Gradually add the ice-cold water and pulse until the dough comes together.
    • Shape the dough into a disk, wrap it in plastic wrap, and refrigerate for at least 30 minutes.
  2. Caramelize the Onions:
    • Heat olive oil in a large skillet over medium heat. Add the sliced onions and cook, stirring occasionally, until they become soft and golden brown.
    • Optionally, sprinkle sugar over the onions to aid caramelization. Season with salt and pepper.
    • If using, add balsamic vinegar and cook for an additional 1-2 minutes. Remove from heat.
  3. Preheat the Oven:
    • Preheat your oven to 375°F (190°C).
  4. Roll Out the Dough:
    • On a floured surface, roll out the chilled dough to fit your tart pan. Transfer the rolled-out dough to the tart pan and press it into the bottom and sides.
  5. Assemble the Tart:
    • Spread the caramelized onions evenly over the prepared crust. If desired, sprinkle vegan cheese on top.
  6. Bake:
    • Bake in the preheated oven for 25-30 minutes or until the crust is golden and the onions are slightly crispy.
  7. Serve:
    • Allow the tart to cool for a few minutes before slicing and serving.

Nutritional Information (approximate per serving, assuming 8 servings):

  • Calories: Approximately 200-250
  • Protein: 3g
  • Carbohydrates: 25g
  • Dietary Fiber: 2g
  • Sugars: 2g
  • Fat: 12g
  • Saturated Fat: 3g
  • Cholesterol: 0mg
  • Sodium: 150mg