Quickly wash the asparagus and cut away the harder lower portion. Cut them into easy-to-use lengths.
Place them in a microwaveable container and heat them up for 1 minute 30 seconds.
Place the asparagus in a plastic bag so they lay one next to the other and freeze them! If you don't remove the air from the bag, you can keep the asparagus from sticking together. Just give it a shake once frozen.
You could try finely chopping the asparagus and freezing it as well. This makes it very easy to use in many dishes.
I've also added a recipe for how to freeze-store broccoli.