DH had the idea of naking patties out of them and egg and breadcrumbing them. I had the idea of making up some dried herbs with a small amount of hot water, mixing this in, and adding parmesan. We decided to use a burger press, to try and get firm patties.
Chilling them didn't work, so we popped the made patties into the freezer for a short time. Then they were flour/egg/breadcrumbed, apart from one where we ran out of flour.
It was a bit of a palaver to get them fully coated without them disintegrating, but DH did a great job. We then baked them in a hot overn for 20 minutes.]
They tasted delicious. However, it was quite a lot of faffing about. So, we decided that next time we'd continue with the adding herbs and parmesan, but then we'd put the whole lot in an oven dish, and sprinkle seasoned breadcrumbs on top, a kind of potato gratin. It wouldn't be quite the same, but it would be less faff.