Just read "
Oven Canning Preserves Dry Goods for Years" in Countryside
Magazine, (Sept/Oct 2011). The author talks about putting dry goods (grains, dried veggies, not-too-oily nuts and seeds, beans) she would like to heat-treat and keep from bugs in open glass jars in the oven at 200. After an hour (and using a hot pad to handle them), she sweeps a wet paper towel around the rim and quickly caps them with their lids (all that matters is they have a rubber seal). It is easier to handle if you put all your jars (can be big gallon jars) on a cookie sheet so you don't knock your open grains into the oven. The dry goods will last from 20-30 years and free up a lot of freezer space.
I had never heard of oven canning, and thought it was worth sharing, especially if you buy in bulk.