Preheat your oven to 160 Fan / 180 C / 350 F / Gas 4 and line a couple of large trays with parchment or silicon mats
Put the oats into a food processor and whizz until fairly powdery
Peel the banana, break into chunks and add to the oats in the food processor along with the remaining ingredients
Whizz everything together until it starts to form a dough
Tip the dough out onto a piece of baking parchment, lay another piece over the top and roll the dough out between the two sheets until roughly 1/4 inch (1/2 cm) thick
Use whatever cutters you prefer to cut shapes out of the dough and lay them onto your prepared trays. Re-roll the trimmings and repeat until you've used up all the dough
How many biscuits you get wil depend on how big your cutters are!
Bake for 15 minutes then allow to cool on the tray for 5 minutes before transferring to a wire rack to cool completely
Store in a lidded container for a few days or freeze in batches
Notes
If you don't have any cookie cutters just cut the rolled dough into strips before baking - the dogs really don't care what shape these dog biscuits are! ;)
Recipe by The Cook & Him at https://thecookandhim.com/recipes/grain-free-dog-treats/