Prepare a batter from the first six ingredients. Prepare the dough several hours before processing and let it rest.
For the topping, chop the trout fillets and place in a bowl. Add all other ingredients and mix well. Season with salt, pepper and dill.
Grease a springform pan. Pour in the dough and distribute it well. Put the fish mixture on top and distribute it as well. Put the trout cake in the oven.
Bake in a preheated oven at 200 ° C for about 25 minutes.