Heat the olive oil in a pan, then add the chopped onion.
Cook until it softens, then set aside to cool.
Combine the breadcrumbs, the cream, and the egg in a small bowl, and mix until it resembles a paste.
Mix the ground meat, breadcrumbs-egg paste, softened onion, salt, and pepper using a medium to a large bowl.
Use a teaspoon to scoop a portion of the meatball mix and form it into a ball.
Place the meatballs in a tray and repeat until there's no more ground meat mixture left.
Heat the vegetable oil in a medium-sized pan.
Once it's ready, add the Finnish meatballs carefully into the hot oil.
Fry until the sides of the meatballs are golden in color.
Place the cooked meatballs on kitchen paper to absorb any excess oil.
Transfer your Finnish meatballs into serving plates and enjoy!