Mix well the dumpling dough with the finely diced onion and all the other ingredients except the oil, season with salt and pepper if necessary. The mass is usually spicy enough thanks to the pesto and the finished dumpling dough.
Line a baking sheet with parchment paper and spread the mixture on top in the thickness of potato pancakes. Now spread the oil on it with a pastry brush. If you like, you can sprinkle ham cubes and / or grated cheese on top. Bake at 180 ° C for about 35 minutes.
This fits e.g., herb quark, fresh salad or applesauce.
For parties, you can cut small bite-sized pieces from the potato pancake and top it with salmon, cheese, ham, salami, fried apple slices,
But I could also imagine it as a pizza base, then add all the other ingredients for the pizza to the unbaked dumpling mixture!