I made these today and they were yummy!
I added/left out a few things, but I think I'll try them again in the future and follow the recipe as it's suggested.
Here is a link to The Civilized Caveman where I got the recipe.
The differences I made were 1 tsp. of vanilla extract (recipe calls for 2, but I ran out) and I added a 1/4 cup of coconut flour which I think made them a little too "cakey" to be considered brownies, but they were still delicious.