Rinse the quinoa under cold water to remove bitterness.
In a saucepan, combine quinoa and vegetable broth.
Bring to a boil, then reduce heat and cover, simmering for 15 minutes.
Fluff quinoa with a fork and let it cool slightly.
In a large bowl, combine the quinoa with mixed greens.
Add the diced cucumber and cherry tomatoes to the bowl.
Top with sliced avocado and red onion.
Drizzle olive oil and lemon juice over the salad.
Season with salt and pepper, then toss gently to combine.
Serve immediately and enjoy your nutritious quinoa bowl!