Pre-heat oven to 350 degrees.
Add nuts, raisins, and coconut to food processor. Pulse until coarse and crumbly.
Add 3 ounces chopped dark chocolate. Pulse quickly until well chopped, but not pulverized.
Mix honey and nut butter in a bowl. Then add to food processor and pulse to mix. I find that pulsing, then pausing for a moment, and repeating several times, works very well to thoroughly blend the mixture.
Dump into a 13x9" pan, and press down well.
Bake 20 minutes, until coconut is just beginning to turn brown.
If topping with chocolate, sprinkle 3 ounces dark chocolate over warm granola bars. Once it's melted, spread smooth with a spatula or knife.
Allow to cool completely before cutting.
