Vegan Gluten-Free Onion Tart

Prep: 15 minCook: 25 min1 tart (4 slices)mediumFrench
Vegan Gluten-Free Onion Tart

Caramelized onions layered on gluten-free pastry, topped with a silken tofu and soy cream custard infused with Provençal herbs, garlic powder, and warm spices. A savory French tart that is entirely plant-based and naturally gluten-free.

Ingredients

Yield: 1 tart (4 slices)
  • 1 gluten-free pastry, store-bought or homemade
  • 2 yellow onions, peeled and sliced
  • 4 oz silken tofu, drained
    cashew cream1:1vegansoy-freeadds dairy

    creamier texture, reduces soy allergen

  • 14 tbsp soy cream
    oat cream1:1vegandairy-free

    similar richness

  • 2 tbsp potato starch
    cornstarch1:1vegangluten-free

    same binding properties

    Full guide →
  • 1 pinch salt
  • 1 pinch black pepper
  • ½ tsp ground nutmeg
  • 1 tbsp Provençal herbs
  • 1 tbsp mustard
  • 2 tsp wild garlic powder
    shallot powder0.75:1vegan

    milder onion note

  • ½ tsp garlic powder
    shallot powder0.75:1vegan

    milder onion note

    Full guide →
  • 2 pinch ground cumin
  • 10 tbsp dry white wine
    vegetable broth1:1vegan

    removes alcohol

    Full guide →
  • 1 tbsp olive oil

Instructions

  1. 1

    Preheat oven to 400°F and blind-bake the gluten-free pastry for 5 minutes. Remove and set aside.

  2. 2

    Peel and slice onions into rounds.

  3. 3

    Heat olive oil in a non-stick skillet over medium heat and sauté onions until they begin to brown.

  4. 4

    Deglaze the pan with white wine and allow the liquid to evaporate completely. Season with salt and pepper. Set aside.

  5. 5

    Blend drained silken tofu, soy cream, potato starch, mustard, nutmeg, wild garlic powder, garlic powder, cumin, salt, and pepper in a food processor until smooth.

  6. 6

    Arrange caramelized onions evenly over the pastry base, then pour the blended mixture over top.

  7. 7

    Sprinkle with Provençal herbs and bake for 25 minutes.

  8. 8

    Serve immediately with green salad.

Tips

Tip 1

Ensure tofu is well-drained to avoid excess moisture that may make the custard watery.

Tip 2

Do not skip the initial pastry blind-bake to prevent a soggy crust.

Tip 3

The onions must be caramelized fully for depth of flavor; do not rush this step.

Good to Know

Storage

Refrigerate covered for up to 3 days. Reheat at 160°C for 10 minutes.

Make Ahead

Prepare the custard mixture and caramelize onions up to 1 day ahead. Assemble and bake just before serving.

Serve With

Serve immediately with crisp green salad and a glass of dry white wine.

Common Mistakes

Watch

Do not skip blind-baking the crust to avoid sogginess.

Watch

Do not under-caramelize the onions; full color develops flavor.

Watch

Do not over-blend the custard mixture; it should be smooth but not airy.

Substitutions

Dairy-Free Swaps

soy cream
oat cream1:1vegandairy-free

similar richness

Vegan Options

potato starch
cornstarch1:1vegangluten-free

same binding properties

Full guide →
dry white wine
vegetable broth1:1vegan

removes alcohol

Full guide →
silken tofu
cashew cream1:1vegansoy-freeadds dairy

creamier texture, reduces soy allergen

wild garlic powder
shallot powder0.75:1vegan

milder onion note

Find more substitutions →