Start by cutting the onions into strips then transfer them to a medium baking sheet, spreading them all over the bottom.
Now pour some olive oil over the onions and set aside.
Into a bowl, add the ground beef, the crushed garlic cloves, season with black pepper, salt, chimichurri and sweet paprika. Mix it all together very well until the spices incorporate into the meat.
Then, get a chunk of meat and make some meatballs. It made 9 meatballs here.
Get the meatballs and put them on the baking sheet we’ve set aside. Place the boiled and grated eggs over each meatball. Also add the grated potato, the mozzarella cheese and the mayonnaise.
Take the baking sheet to a preheated oven at 180°C (356°F) for 45 minutes.
Serve.