I make a very quick and easy sardine bread for training treats.
1 small tin sardines in oil, drained and mashed
1 egg, beaten
Enough flour to mix with the sardines and egg to make a stiff dough
Spread on to a microwaveable plate and microwave for about 3 minutes.
Cut into pieces when cooled. I use scissors to cut it up because it's easier than a knife.
Keeps in the fridge for a few days and can be frozen.