there is no such thing as a healthy protein bar.
they are heavily processed and full of preservatives. how do you think it can stay good for months on the shelf? and of course they add lots of sweeteners to it otherwise it would taste like ass. you know that whey is actually extremely bitter. so the 20 somethings that buy them will not go near it without it being super sweet.
if you must have a bar, then make your own. get some raw nuts, raw honey and some almond butter. press them all together and put in fridge for a bit. now you have your own healthy bar.