1. In a medium saucepan, combine 1 cup of rinsed quinoa with 2 cups of water. Bring to a boil, then reduce heat to low, cover, and simmer for about 15 minutes until water is absorbed.
2. Rinse the black beans in a colander under cold water and set aside to drain.
3. Prepare the vegetables: halve the cherry tomatoes, and if using fresh corn, cut the kernels from the cob.
4. Dice the avocado and squeeze lime juice over it to prevent browning.
5. Finely chop the red onion and add it to the bowl with tomatoes and corn.
6. Once the quinoa is cooked, fluff it with a fork and let it cool slightly.
7. In a small bowl, whisk together lime juice and olive oil.
8. Assemble the bowl starting with quinoa, then layer on black beans, tomato, corn, onion, and avocado.
9. Sprinkle cilantro over the top, drizzle with dressing, and season with salt and pepper.
10. Serve immediately or refrigerate for up to a few hours.
Notes
This dish can be meal-prepped for the week and enjoyed cold or at room temperature.