Definitions

1. noun

a dish of food in which the top layer is covered with a crust of breadcrumbs or grated cheese that is browned in the oven.

“She made a delicious lasagna gratin for the family dinner.”

2. noun

a dish of food in which the ingredients are topped with a layer of creamy sauce and then baked until golden brown.

“The chef recommended trying the creamy potato gratin.”

3. verb

to cook (a dish of food) with a crust of breadcrumbs or grated cheese on top, until browned in the oven.

“The recipe instructs you to gratin the vegetables in the oven.”