Place in food processor and run for about a minute and scrape down sides if necessary. Then process for another 3-4 minutes or until peanut butter has reached desired consistency.
If using salted peanuts, you do not need to add any extra salt.
You can add honey if you want a little extra sweetness. If so, add about 1 teaspoon per cup of peanuts.
Notes
1 cup of peanuts yields a little over 1/2 cup of peanut butter.