I made my standard Dark Chocolate Chip Cookie recipe (here) and then went scrounging around the kitchen to see how I could take them up a couple of notches.
First I added 3/4 cups of rolled oats (not quick oats), then two good handfuls of unsweetened coconut flakes. This made perfectly crisp and chewy cookies with some great flavor.
Add the oats to the butter/sugar/egg mixture and let sit for a minute or two before adding the remaining ingredients, to soften them a bit.
Bake at 375 F for 10-12 minutes.