15% off €30 OR 20% off €40
In a heavy-bottomed frying pan over a medium-high heat, melt together the oil and one tablespoon of butter. Then add in the onions and cook, stirring continuously until they begin to stick to the bottom of the pan
Reduce the heat and continue to cook until caramelised and golden brown
In the last few minutes of cooking add in the garlic, followed by the honey and balsamic vinegar once the onions have caramelised. Remove the onions from the pan and set aside