Turn on the oven to 180 °C (360 °F).
Take mince meat out of the fridge and let come close to room temperature.
Dice the onion and mince the garlic.
Mix onion, garlic, barbecue sauce, milk and breadcrumbs in a bowl and let sit for at least 15 minutes.
Once the mixture has come together in to a sludge add the mince, egg, salt and pepper.
Stir it all together into a smooth batter. I will do it using my hands but feel free to use a spoon.
Wet your hands with cold water and roll the mince batter into round meatballs. Place on a cooking tray, space apart.
Oven cook for 10 minutes in the middle of the oven.
If using a frying pan, add some butter in the bottom of the pan and fry the meatballs on all sides until golden in colour.