It consists of a pie shell with a filling of tomatoes (sometimes with basil or other herbs), covered with a topping of grated cheese mixed with either mayonnaise or a white sauce.
[1][2] It is considered a summer dish, to be made when tomatoes are in season.
[3] A sweet version called green tomato pie uses buttered and sugared green tomatoes, with a recipe dating at least as far back as 1877.
[4] The taste has been compared to that of green apple pie.
[5][6] The sweet version is less common than the savory Southern tomato pie.