
Start by cooking the fresh corn kernels until they're tender but still crisp, usually taking about 5-7 minutes.
Let the corn cool, then mix it with diced cucumber, halved cherry tomatoes, and chopped red onion in a large bowl.
In a separate bowl, whisk together mayonnaise, sour cream, lime juice, chili powder, salt, and pepper until smooth and creamy.
Toss the dressing with the vegetable mixture until evenly coated.
Sprinkle crumbled feta cheese and chopped cilantro on top before serving.