I know Roman isn't exactly what you're looking for, but I find this website http://pass-the-garum.blogspot.com/ to be interesting. It seems that the author takes a few liberties with ingredients that aren't around anymore (like the titular garum) but it looks like they know their stuff.

There's also this blog http://timetravelkitchen.blogspot.co.uk/ which has recipes that go from the 1400s to the 1970s (plus one from 400), with a particular focus on late 19th and early 20th centuries, probably because that's what's available.

Don't know if that's what you're looking for, but they're the only two I know of.

Jean Bottéro's The Oldest Cuisine in The World is a fine introduction to ancient Mesopotamian cookery that even includes some recipes.

I also cooked one that I can't find again, but the recipe is as follows:

Stewed Kale:

1lb of shredded kale

3 Onions roughly chopped

3 Cloves garlic chopped

1 cup of broth (I used chicken)

1 stick of butter (called for ~ a cup of fat, but I didn't want to do that)

Sautee the kale, onion and garlic until onions are translucent and garlic is getting brown. Dump in the broth and reduce for an hour or so.

It was really good, and we served it for a Roman "sausage fest" I hosted for the season premier of Spartacus (which was very bad).