In a medium-sized pot, combine the rinsed quinoa and water (or vegetable broth). Bring to a boil over medium-high heat.
Once boiling, reduce the heat to low, cover, and let it simmer for about 15 minutes until the quinoa is fluffy and all liquid is absorbed.
Remove the pot from heat and let it sit, covered, for 5 minutes. Then, fluff the quinoa with a fork and allow it to cool to room temperature.
While the quinoa is cooling, prepare the vegetables. In a large mixing bowl, combine the halved cherry tomatoes, diced cucumber, red onion, olives, and chopped parsley.
In a small bowl, whisk together the olive oil, lemon juice, dried oregano, salt, and pepper.
Once the quinoa has cooled, add it to the bowl with the vegetables. Drizzle the olive oil dressing over the salad and toss gently to combine.
Finally, sprinkle the crumbled feta cheese on top and give it a final, gentle mix.
Serve immediately or refrigerate for up to 2 hours for the flavors to meld even more.
Notes
Can be refrigerated for up to 2 hours for enhanced flavor.