Zwiebelkuchen

Step by stepInstructions

1. Make the crust: pulse the flour and salt with the butter until crumbly, then add the egg and water and pulse until the dough comes together. Wrap and chill 30 minutes.
2. Render the bacon in a large skillet. Add the onions and cook slowly over medium-low heat 20–25 minutes until soft and golden. Cool slightly.
3. Preheat the oven to 375°F. Roll the dough out and fit it into a 10-inch tart pan, trimming the edges.
4. Whisk the eggs, sour cream, caraway, nutmeg and pepper, then fold in the onion-bacon mixture.
5. Pour the filling into the crust.
6. Bake 35–40 minutes until the filling is set and golden at the edges.
7. Cool 10 minutes, scatter with chives, and serve warm.