Measure 1/2 peanuts and put aside. Empty remaining peanuts into blender container. Cover and blend on low speed until the peanuts are chopped. Add butter, cover and blend on low speed 15 seconds. Turn off the blender and scrape down sides with rubber spatula. Cover and blend on low speed 5 seconds. Repeat this process 3 or 4 times until the peanut butter starts to get smooth. Cover and blend on highest speed 1 minute. Add the 1/2 cup peanuts, cover and blend on medium speed for 3 - 5 seconds. Refrigerate for 30 minutes
before serving.
