In a large sauté pan sauté corn and jalapeño in the olive oil-water, a add small amount of water if needed to keep the vegetables from sticking, until the corn is lightly browned.
Transfer the corn to a large bowl, cool, then add black beans, red pepper, cherry tomatoes, green and red onions, mix gently.
Pour dressing over the salad and mix gently once again.
Refrigerate 6 hours or overnight, covered with plastic wrap.
Add avocado just before serving, mixing it into the salad gently, sprinkle with the snipped cilantro and serve.