If using fresh ears of corn, cook it using your preferred cooking method and remove fresh corn kernels from the cob with a sharp knife. I prefer to boil my corn or roast it in the oven. If you have a grill, that's even better for the flavor of this dish. If you're using frozen corn or canned corn, heat it in a large skillet on medium-high heat until it is thawed and warmed, about 4-5 minutes. You can heat it in the microwave if you prefer.
In a food processor or blender, make the Southwest dressing by combining the dressing ingredients and blending for 1-2 minutes.
Slice the cucumber with a sharp knife, side of a box grater, or kitchen mandoline. Half the cherry tomatoes, dice the avocado, and chop the bell pepper, red onion, and cilantro.
To assemble the salad, add the thinly sliced cucumber, tomatoes, corn, bell pepper, red onion, avocado, and cilantro to a large bowl. Pour the dressing on top and give it a good mix, making sure it is well coated.
Hint: If you are making this salad in advance wait and add the dressing right before serving.