Preheat grill to medium-high or skillet to medium heat. Shuck the corn and brush with olive oil. Season with salt and pepper. Grill for 10-15 minutes, turning occasionally, until charred and tender. Let cool slightly.
3 ears fresh corn on the cob
Stand each ear of corn on its end and use a sharp knife to cut the kernels off the cob. (If using canned or frozen corn, cook briefly in a skillet after draining or thawing.)
In a small bowl, whisk together lime juice and olive oil. Taste the dressing, then add salt and pepper to your preference.
2 tablespoons lime juice, 2 tablespoons olive oil, Salt and pepper
In a large bowl, combine grilled corn, cherry tomatoes, avocado, red onion, and cilantro. Pour dressing over the top and gently toss to combine.
1 pint cherry tomatoes, 2 avocados, ¼ cup red onion, ¼ cup fresh chopped cilantro
Serve immediately.