Preheat oven to 180°C. Line 2 oven trays with baking paper.
Place onion into the Thermomix bowl. Chop 5 sec/speed 5. Add panko and combine 3 sec/speed 3. Let it rest for 10 minutes. The panko will soak up the onion juices and give flavour and texture to the patties.
Add all remaining ingredients except EVOO and combine 10 sec/Reverse/speed 2.
Roll into patty shape and coat with panko. Place on prepared trays and drizzle with EVOO. Bake for 30 minutes.
Combine all ingredients in a small bowl.
Serve patties with pickle and garnish with dill.