Creamy Quark Tart

Beat the softened butter, eggs, and sugar until smooth and well combined.

Sift the flour, mix in the baking powder, and stir to combine.

Gradually add the flour mixture to the butter-egg base and knead into a soft, non-sticky dough.

Wrap the dough in plastic wrap and chill in the refrigerator while you prepare the filling.

For the filling, combine all the ingredients—quark, sugar, eggs, sour cream, and vanilla—and blend with an immersion blender until completely smooth.

Line the bottom of a baking pan with parchment paper and grease the sides with butter.

Press the dough evenly into the pan, smoothing it out and building up the edges.

Pour the filling into the crust and top with berries.