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German

Zwiebelkuchen

A traditional German onion tart with a tender yeast base, slowly softened onions, smoked bacon, and a creamy Schmand custard. It is especially at home in autumn, served warm with a glass of Federweißer or dry white wine.

Zwiebelkuchen — German — ChefSnap
35 minsPrep
40 minsCook
4Serves
MediumDifficulty
720 kcal per serving24g protein 62g carbs 42g fat
Watch it made — ZwiebelkuchenWatch it madeCALLEkocht - Omas Rezepte · 8:33

Ingredients

Method

  1. Crumble the fresh yeast into the lukewarm milk and stir until dissolved.
  2. Place the flour in a bowl, add the yeast milk, softened butter, and salt, then knead for 6 to 8 minutes until the dough is smooth and elastic.
  3. Cover the dough and let it rise in a warm place for about 45 minutes, until noticeably puffed.
  4. Heat the oil or lard in a pan over medium heat, add the diced bacon, and cook until the fat begins to render but the bacon is not hard.
  5. Add the sliced onions and cook gently for 15 to 20 minutes, stirring often, until soft and translucent but not browned.
  6. Remove the onion mixture from the heat and let it cool for 10 minutes.
  7. Heat the oven to 200°C and lightly grease a small tart tin or baking dish about 20 cm wide.
  8. Whisk together the Schmand, egg, caraway seeds, nutmeg, and black pepper in a bowl.
  9. Stir the cooled onion and bacon mixture into the Schmand custard.
  10. Roll the yeast dough out thinly and press it into the prepared tin, forming a small rim around the edge.
  11. Spread the onion custard evenly over the dough.
  12. Bake for 30 to 35 minutes, until the filling is set and lightly golden and the yeast crust is browned at the edges.
  13. Let the Zwiebelkuchen rest for 5 minutes before slicing and serve warm.

Common questions

Can I substitute the fresh yeast, Schmand, or Speck if I can’t find them?

Yes. Use 1/3 the weight of fresh yeast as active dry yeast or 1/2 as instant yeast, dissolved appropriately. Replace Schmand with full-fat sour cream or crème fraîche. Use thick-cut bacon, pancetta, or even smoked ham instead of Speck.

How long does Zwiebelkuchen take from start to finish, including rising and baking?

Plan on about 2 to 2.5 hours total. The dough needs about 45 minutes to rise, the onions need 15 to 20 minutes to cook, and baking usually takes 30 to 40 minutes until golden and set.

What are the most common mistakes when making Zwiebelkuchen?

The biggest mistakes are browning the onions, which makes them bitter, and using a filling that’s too hot or too wet, which can make the crust soggy. Also avoid overbaking; the custard should be just set, not dry.

How should I store leftover Zwiebelkuchen, and can I freeze it?

Store cooled leftovers covered in the fridge for up to 3 days. Reheat in the oven at 160–180°C so the crust stays crisp. It also freezes well in slices for up to 2 months; thaw in the fridge before reheating.

What should I serve with Zwiebelkuchen?

It’s classic with Federweißer, but it also pairs well with a dry white wine, young cider, or beer. Serve warm or at room temperature with a simple green salad to balance the richness of the onion, bacon, and custard filling.