A traditional potato kugel is a savory baked casserole made with grated potatoes and onions. Baking it in a preheated cast-iron skillet creates an incredibly crispy, golden-brown crust while keeping the center tender. It is a classic dish often served during Passover, but it works just as well for a weekend brunch or a comforting family dinner. The combination of starchy potatoes, savory onions, and rich oil or chicken schmaltz delivers deep, satisfying flavor in every slice.