Rinse the quinoa thoroughly under cold water to remove any bitterness. Drain well.

In a medium saucepan, bring the water or vegetable broth to a boil. Add the quinoa, reduce heat to low, cover, and simmer for about 15 minutes or until the liquid is absorbed.

Remove the quinoa from heat and let it sit, covered, for 5 minutes. Then fluff with a fork.

In a large bowl, combine the cooked quinoa, diced cucumber, red bell pepper, avocado, and red onion.

In a small bowl, whisk together the olive oil, lemon juice, salt, and pepper to make the dressing.

Pour the dressing over the quinoa mixture and toss gently to combine. Garnish with fresh parsley or cilantro before serving.