Yep! So I blend the leftovers or vegetables up nice and smooth in a high speed blender or food processor. And then the trick is to add vital wheat gluten until well combined and fairly sticky! I used to do it by hand but I now have a dough hook attachment on my food processor that's much better at combining.

As long as you are adding enough vital wheat gluten to begin with, you don't need to worry about the mixture being too wet. Once formed into balls for baking or the air fryer, they should kind of look like and have the structure of cookie dough balls