Zwiebelkuchen

Zwiebelkuchen

Zwiebelkuchen (TSVEE-bel-KOO-khen)

Swiss Onion Tart

Prep Time 45 min
📈 Difficulty Medium
👥 Servings
6
🔥 Calories 376 kcal

A savory custard tart loaded with slowly caramelized onions, enriched with cream and eggs on a crisp pastry base, served warm with new wine.

Nutrition & Info

380 kcal per serving
Protein 12.0g
Carbs 28.0g
Fat 24.0g
Protein Carbs Fat

Dietary

vegetarian nut-free

Allergen Warnings

⚠ dairy ⚠ gluten ⚠ eggs

Equipment Needed

tart pan large skillet rolling pin whisk

Presentation Guide

Vessel: tart pan on wooden board

Garnishes: caraway seeds, fresh thyme

Accompaniments: new wine, green salad

Instructions

  1. 1

    Make pastry: rub butter into flour, add egg yolk, water, and salt. Chill 30 min.

  2. 2

    Slowly cook onions in butter over low heat for 30 min until deeply golden and sweet. Season.

  3. 3

    Roll out pastry and line a 26cm tart pan. Prick the base.

  4. 4

    Spread caramelized onions over the pastry.

  5. 5

    Whisk eggs, cream, sour cream, flour, and seasonings. Pour over the onions.

  6. 6

    Sprinkle with caraway seeds.

  7. 7

    Bake at 190°C (375°F) for 35-40 min until set and golden. Cool slightly before serving.

💡

Did You Know?

Zwiebelkuchen is inseparable from Federweisser (new wine) — the two are only available together during the autumn wine harvest season.

Chef's Notes

Equipment Tips

  • tart pan
  • large skillet
  • rolling pin
  • whisk

Garnishing

caraway seeds, fresh thyme

Accompaniments

new wine, green salad

The Story Behind Zwiebelkuchen

The Zwiebelkuchen tradition dates to medieval times when it was baked to celebrate the autumn onion harvest. In Swiss-German regions, it is inextricably linked to the season of new wine, known as Federweisser or Sauser. The tart showcases the alchemical transformation of onions through patient caramelization, turning sharp alliums into something deeply sweet and complex.

🕐 Traditionally enjoyed autumn, wine harvest 📜 Origins: Medieval

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