01 -
Preheat oven to 200°C. Grease a 23 cm springform pan. Assemble all measured ingredients.
02 -
In a Dutch oven or heavy skillet over medium-high heat, fry chopped bacon until crispy. Transfer to a plate, reserving rendered fat.
03 -
Add butter to the bacon fat in the same pan. Stir in the onions and cook for 25 to 30 minutes, stirring occasionally, until golden and softened. Remove from heat and let cool slightly.
04 -
In a mixing bowl, whisk together sour cream, eggs, flour, salt, and caraway seeds until fully combined.
05 -
On a lightly floured surface, gently roll out one pie crust to increase its diameter by approximately 2.5 cm.
06 -
Press the rolled-out pastry into the prepared springform pan, ensuring a 2.5 cm border from the pan's top edge.
07 -
Fold cooled onion and bacon mixture into the sour cream mixture. Pour filling into the crust-lined pan and sprinkle with extra caraway seeds.
08 -
Transfer to the oven and bake for 50 to 55 minutes, or until the top is golden and the center is set. Let rest briefly before serving.