One of the best methods for cooking frozen asparagus is steaming. This can be done by adding about an inch of water to the bottom of the pan, along with the asparagus, then covering and cooking on the stove top for 6 to 8 minutes. Additional methods of cooking include sautéing, blanching and stir fry.
A properly sealed package of frozen asparagus can be safely stored in the freezer for 10 to 12 months. As frozen asparagus does not need to be thawed before it is prepared, it is a great way to keep a supply on hand for quick use, without it going bad.
To sauté frozen asparagus, cook it for 3 to 5 minutes with some oil or butter. Alternatively, in the same amount of time, the asparagus can be stir fried, which uses a similar method, but requires constant movement of the asparagus as to not overcook it. In both cases, the asparagus should be tender, but still crisp when done.
Asparagus can also be blanched, which involves placing the stalks in heated water for 3 to 4 minutes and then rinsing them in ice cold water before serving.