Add the quinoa, capsicums, cucumber, beans, corn, onion, tomatoes, sunflower seeds, and avocado to a large bowl.
For the dressing, add the soy yogurt, cilantro, baby spinach, lime juice, cumin powder, garlic clove, jalapeno slices (if using), and a pinch of salt to a blender. Process until smooth.
Pour the dressing over the salad and mix well to combine. Serve and enjoy this nutrient-rich, gut-friendly meal.