Peanuts are actually a legume instead of a nut and can be dried and roasted at slightly higher temperatures. Peanuts can be dried shelled or unshelled. Spread in single layer and dry at 130ºF. Peanuts are dry when their shells have hardened to a brittle state. Crack one. The nut meat should be tender, but not shriveled.
To roast peanuts in the shell, place them in a shallow pan at 300ºF for 30 to 40 minutes. If they are shelled, roast them for 20 to 25 minutes and stir frequently to prevent scorching.
This document was extracted from "So Easy to Preserve", 5th ed. 2006. Bulletin 989, Cooperative Extension Service, The University of Georgia, Athens. Revised by Elizabeth L. Andress. Ph.D. and Judy A. Harrison, Ph.D., Extension Foods Specialists.