In a large frying pan, heat the olive oil over medium heat.
Add the onions and cook, stirring often to ensure they don't burn, and cook for about 5 minutes or until they are soft; add the onions to a large bowl and set the pan aside.
To the same bowl, add the ground meat and the seasoning (salt, pepper, oregano, sage); mix to combine and form into small patties (I won't give you sizes as you can make them as big or small as you like - mine are usually 2 tbsp per patty).
In the same pan you cooked the onions, add the patties and brown on each side (the time you cook will depend on how thick you make them); once they are cooked through, serve immediately (they can also be frozen).