OK, it's not really a recipe since there is only one ingredient! Sorry, I didn't take pictures of the first part of the recipe!
1 lb. Serrano Peppers
Wash peppers. Slice down the middle, lengthwise. Place in dehydrator trays. Set temperature dial at 135F. Dehydrate for 8-12 hours or overnight until thoroughly dry (hard, but brittle.)
Place dried peppers in small food processor in batches. Pulse continually until ground, adding more peppers until all are done.