Put the flounder and onion in the bowl, chop: 10 sec. speed 7.
Gather on the bottom with the help of a spatula and add the rest of the ingredients and mix: 20 sec. speed. 4.
Form meatballs with slightly moistened hands, roll them in breadcrumbs and place them on baking paper.
Drizzle them with a drizzle of oil and cook them in a preheated oven at 180°C for about 20 minutes, turning them halfway through cooking.
Let it cool slightly and serve... Buon appetito!
If you use frozen plaice fillets, remember to defrost them before using them.
As an alternative to the oven, you can use a non-stick pan or cook them in the varoma.
*To make it a dish suitable for celiacs, just replace the breadcrumbs with the gluten-free one.