I made tuna cake in a cake tin
Ingedients:
2 small tins of tuna (in sunflower oil, do not drain)
100g wholemeal flour (although any type works)
1 egg
2 cloves of garlic
Directions:
Mix all ingredients together. Spread evenly onto a baking tray (preferably one lined with greaseproof paper for ease)
Score with a knife pre cooking (as it's quite crunchy to cut afterwards)
UPDATE:
If you want to make pretty bone shaped biccies or whatever just keep adding more flour until you get a dough texture, then roll out and cut. Tastes just as yummy apparently.
Cook for 30 - 40 minutes at 180c
Cooked treats can be frozen and de-frosted
ETA- not the same recipe I used because mine was soft when it came out, but I guess could cook it for slightly less time