Prep: 10 min.; Soak: 8 hr.; Cook: 6 hr., 15 min.; Stand: 1 hr. You can find dried peanuts in the produce section of your local supermarket or at a farmers market. Store cooked peanuts in the refrigerator up to three days. If you prefer your peanuts warm, heat them in the microwave, covered, at 80% power for 3 to 5 minutes, stirring once.