What chocolate dessert is named after a Southern state?

The chocolate dessert named after a Southern state is Mississippi mud pie.

Mississippi mud pie is a rich chocolate dessert associated with Mississippi and named for the dark, dense appearance of the mud along the Mississippi River. Modern versions commonly combine a crumbly chocolate-cookie crust with layers resembling brownie, chocolate custard, or gooey chocolate sauce. Ice cream or whipped cream is often served on top.

There is no single universally fixed recipe. Some versions add marshmallows, pecans, walnuts, coffee, or liqueur, while others are closer to a chocolate tart or a layered cake. That variety is why the name can describe several related desserts rather than one standardized formula.

The dessert is often connected with the American South, although its precise origin is uncertain. The earliest known reference in print is dated 1975, and stories placing its creation earlier in Mississippi are difficult to verify. It is not the same as Alabama Lane cake, Louisiana crunch cake, or Texas sheet cake, despite all belonging to Southern dessert traditions.