Gratin is the honest answer to all those evenings when you want to eat something real without any fuss. No bells and whistles, no obscure techniques — just generous layers, a hot oven, and an aroma that fills the entire apartment. This potato gratin with beef meatballs and mozzarella is exactly that.

Imagine the dish coming out of the oven: the mozzarella has melted into a golden crust like light caramel, with those tiny bubbles still crackling. Underneath, the béchamel has seeped between every layer of potato, creamy and lightly nutmeg-scented. The beef meatballs are there, firm yet tender, nestled between the slices. And that smell of grilled cheese mixed with warm paprika — it’s hard to stand in line politely.