well I usually use flaxseed meal as an egg substitute and coconut oil or apple sauce (if I am keeping the calories down) for the butter.
does that sound like it would work with your other ingredients? it is always a bit of experimentations :) if there is milk in a recipe I put almond milk, coconut milk, ... depending on what it is!
oh well, now you know if you ever want to experiment or if ever someone asks :) Take care! Thanks for your help and support my friend!! I shared some of your auctions and of course am watching :) take care!