I make a savoury version -
1/4 cup flax (I guess it)
1 egg
baking powder
herbs
all purpose seasoning (from herb aisle - contains a bit of chilli, paprika etc)
Bit of extra water
I don't use butter or oil
I either bake it in the mug or tip onto aplate and flatten out to get a base for a pizza, or I toast it.
Gorgeous - slightly wetter mixes rise better