Rinse quinoa under cold water.
In a medium pot, bring vegetable broth to a boil. Add quinoa, reduce heat, cover, and simmer for 15 minutes.
In a large bowl, combine cooked quinoa, black beans, corn, bell pepper, avocado, and cilantro.
In a small bowl, whisk together lime juice, cumin, salt, and pepper.
Pour dressing over quinoa mixture and toss to combine.
Serve immediately or chill in the fridge for later.