How long does it take to cook frozen peas in a slow cooker? I mostly use frozen peas for cooking. But sometimes they remain hard even if I cook them for a bit longer, but peas remain pretty hard and fibrous, not soft. What can be done to avoid their hardness. I also do not put them directly to cooker. I soak them for sometime but this trick is also not working. What can be the reasons?
Adding frozen stuff directly to a slow cooker drops the temperature of the whole pot, which takes some time to recover.  

I don't often use peas in mine but I've never had a problem with them if I pour boiling water over them and wait a few minutes before draining them and stirring them in, when the rest of the dish is finished.