Quinoa has been approved by the conservative movement for use on Pesach.  I bought mine with a hechsher by the O/U and certified for use on Pesach.  I found it on Amazon.com

Ingredients  makes 6 cups (Quinoa tabbouleh)

·         3 cups cooked quinoa (click here for instructions on how to cook quinoa)

·         2 cups chopped parsley

·         20 yellow grape tomatoes, sliced in half

·         20 red grape tomatoes, sliced in half

·         3 scallions, white and green parts, sliced (optional)

·         ¼ cup extra virgin olive oil

·         ¼ cup freshly squeezed lemon juice

·         ½ tsp salt (or to taste)

Instructions

1.    Combine quinoa, parsley, tomatoes and scallions in a large bowl. Add olive oil, lemon juice and salt and toss well. Refrigerate until ready to serve

:****We also added dried mint to our version and only used red grape tomatoes.