The stir fry and mustard sauce I use with black pepper waffles would probably go nicely with the french toast. Also, consider a white gravy along the lines of what southerners serve with biscuits: make a basic bechamel sauce and add a bunch of cracked black pepper in with the fat and flour you use to make the roux. Some shredded chicken or turkey over top of the bread might make it more like a meal; especially if you serve it with some roasted root vegetables on the side.

Whatever you serve, also consider incorporating the herbs in the bread in the sauce (for instance, if it’s a rosemary-thyme bread, mince some thyme and rosemary and stir it into the gravy immediately before serving) for a green garnish and an extra boost of flavor.

Since it sort of looks like sloppy joes, something like French Joes.