1.
Add the olive oil to a medium pan over medium heat.
2.
Once hot, add the onions and cook until nicely browned and soft, stirring often to avoid sticking. This should take about 20 minutes.
3.
Add everything to a bowl and mix with your hands to combine fully.
4.
Divide into 4 patties, using your hands to press together to avoid them breaking apart.
5.
Cook in a pan over medium high heat or on a barbecue for the best flavour!
