Cook quinoa according to instructions. Most quinoa cook 2 parts liquid to one part quinoa (2 cups water to one cup quinoa for example). Bring water to a boil, pour quinoa into saucepan, return to a boil, cover and let cook for 10-15 minutes until all the water is absorbed.
Cool quinoa while chopping peppers and cucumber into 1/4 inch squares.
When the quinoa is cooled, mix liquid, peppers, cucumber and parsley.
This holds for about 1-3 days and is best served cool.