Preheat oven to 400 °F (200 °C).
Boil the water with butter and salt.
Mix the flours together and slowly stir them into the water.
Stir the mixture on the stovetop until it is smooth and begins to come away from the pot.
Remove from heat and stir in the eggs little by little.
Place the dough in a piping bag fitted with a star-shaped nozzle and pipe balls onto a baking sheet lined with parchment paper.
Bake for about 35 minutes.
Remove from baking sheet and let cool.
For the quark cream, mix the quark with honey until smooth and then fold in the whipped cream.
Halve the cakes, pipe quark cream into the middle, and place them back together.