Flat Wite

The food you are referring to is likely a "flatbread" or "flat white," but it seems there may be a bit of confusion as these are two different items.

A "flatbread" is a type of bread that is flat, rather than leavened and risen like traditional bread. Flatbreads can be made from a variety of grains, including wheat, rye, corn, and barley. They can be served as a side dish, used as a base for sandwiches or pizzas, or enjoyed on their own as a snack. Examples of flatbreads include tortillas, pita bread, naan, and focaccia.

On the other hand, a "flat white" is a type of coffee drink that originated in Australia and New Zealand. It is made by pouring espresso over microfoam (steamed milk with small, fine bubbles). The flat white is similar to a latte, but has a higher ratio of coffee to milk and a smoother, creamier texture.

If you are referring to a dish found in U.S. restaurants that is a flat, white food, it is possible that you are thinking of a "flatbread" that is topped with white sauce, cheese, and various toppings. However, without more specific information, it is difficult to say for sure.