Sorry you had problems with the Pralines. I don't think adding anything after they were cooked would help. If they start setting up too fast when you are trying to dip them you can put them back in the microwave for 10-15 seconds and soften them up a little. If your microwave cooks too fast you can try cooking them for less time and drop a little in cold water to see if they will get hard. If still soft, cook a little longer and test again.