Soak quinoa for five minutes then drain. Cook either in vegetable stock or water for 15 minutes. In the last five minutes put in the corn if using frozen. Drain and cool.
Mix the remaining ingredients in a bowl and pour the dressing in and mix well.
This is good the next day as well. Best if served cold. Substitutions can be made for the vegetables... red onions, grated carrots, whatever you prefer. I have also added a small amount of jalopeno peppers before because my husband likes it hot...