Sheet-Pan Levantine Meatball Sub

Method

1. Gather and prep everything first: brioche buns, cheddar, mayonnaise and set within reach of the stove.
2. Warm a splash of olive oil in a heavy pan over medium heat, then add the yellow onion and cook until soft and fragrant, about 4 to 5 minutes.
3. Turn the heat up, add the meatball sub, and cook until deeply browned and aromatic.
4. Fold in the black pepper and season generously; give everything a minute to come together.
5. Off the heat, brighten it up with a knob of butter and a final crack of pepper.
6. Serve warm, ideally with something to soak up the sauce.