Using the metal blade, process ingredients continuously for 2 to 3 minutes. The ground peanuts will form a ball which will slowly disappear. Continue to process until the desired consistency is obtained. If necessary, stop machine and scrape sides of container with a rubber spatula.
For crunchy peanut butter, stir in 1/2 cup chopped roasted peanuts after the processing is completed.
Yields 1 cup creamy or 1-1/2 cups crunchy peanut butter.
Store in a tightly closed container in the refrigerator. Oil may rise to the top. If this occurs, stir before using.