To freeze jalapeno peppers, wash the peppers, remove the stems, put them in a package, make sure there is no extra space and then seal the bag well. While some types of peppers require people to cut them before freezing, this is not necessary with jalapeno peppers.
When freezing jalapeno peppers, there are a few safety precautions to keep in mind because the pepper's oils can irritate the skin. Always wear a pair of rubber gloves, and try to handle the pepper mostly from the stem because the stem does not have oils. After working with jalapenos, wash hands thoroughly with soap and water, and dispose of the gloves without touching the outside of them.