Hah, that's a tough one man.

I looked through my collection of books and photographs, and I couldn't quite find something that nailed it down. I'm currently inbetween moving, so I don't have my larger volumes on hand, but I do have some online collections, thankfully!

The kind of examples you're most likely to find doing a cursory search yourself from the Victorian era, are photographs of people sitting down to eat, not necessarily just their food. The Kansas Historical Society has a great piece on some of the food of Native American's, and here's a picture of a family sitting down in 1912 with an elaborate dinner prepared. Another one here of a group of men munching down on watermelon, and one of George and Libbie Custer having a meal outside the Officer's tent.

These are the earliest examples I can currently find that features food. With the early processes, though, it was far too expensive to bother photographing your meals same as we do today, so I'd say it wasn't until a lot later that we truly see the whole 'Photograph first, eat later' phenomenon. Depending on what your criteria are, though, what I mean by this is both year and what's in the photograph, the best I can do is early cookbooks from the 40s and 50s that feature point of view shots of food.

Unfortunately I can't seem to locate any Victorian lords madly photographing most everything in their wake, but that's not to say there isn't any out there. :P

Hopefully someone else can chime in with some better information than what I'm able to provide.