What is a crepe filled with sweet or savory fillings called?

The correct term for a crepe filled with sweet or savory fillings is known as a blintz. A blintz is a type of thin pancake originating from Eastern European cuisine, often made from a batter that includes flour, eggs, and milk. Once cooked, the crepe is filled with a mixture, commonly of cheese, fruits, or meat, then rolled and sometimes fried or baked until golden.

The other terms represent different culinary items. A galette refers to a rustic French pastry, usually made with a coarse or flaky pastry dough, that can be used for both sweet and savory fillings but is distinct from a crepe. A frittata is an Italian egg dish similar to an omelet but is cooked more like a crustless quiche, not a filled crepe. Strudel is a layered pastry with origins in Central European cuisine, typically filled with fruit or other fillings, but differs significantly from the smooth and thin texture of a crepe.