Bring quinoa and water to a boil in a medium saucepan. Reduce heat to medium-low, cover, and simmer 15 to 20
minutes, or until all the water is absorbed. Remove from heat, and set aside to cool.
In a large serving bowl, combine black beans, red bell pepper, green onion, and cilantro. Mix in cooled quinoa.
Add remaining ingredients and toss well to combine. Serve at room temperature or chilled.