01 - In a medium saucepan, bring 2 cups water and ½ teaspoon salt to a boil. Add quinoa, reduce heat to low, cover, and simmer for 15 minutes or until water is absorbed. Fluff with a fork and let cool slightly.
02 - In a small bowl, whisk together olive oil, lemon juice, garlic, oregano, salt, and pepper to make the dressing.
03 - Prepare vegetables: halve the cherry tomatoes, dice the cucumber, thinly slice the red onion, halve the olives, and chop the parsley.
04 - To assemble, divide the cooked quinoa among 4 bowls. Arrange spinach, cherry tomatoes, cucumber, red onion, and olives on top.
05 - Drizzle each bowl with the dressing. Add a generous scoop of hummus to each bowl.
06 - Sprinkle with feta cheese (if using) and fresh parsley.
07 - Serve immediately, or chill for later.