Homemade Peanut Butter with Chocolate Chips - Grind peanuts with a little salt in a food processor until smooth and creamy. This will take about 4-8 minutes, depending on the power of your processor. You may need to scrape down the sides of the canister in between. Add a tiny bit of oil if the mixture won’t become smooth, but usually this isn’t necessary. Let cool. Once cool, add chocolate chips and stir well.