Start by bringing a medium pot of water to a boil over high heat. Add fresh corn kernels and let them cook for 5–7 minutes, or until tender and bright yellow. Once cooked, drain the corn and allow it to cool completely while you prepare the other ingredients.

In a large mixing bowl, combine the cooled corn, diced cucumber, halved cherry tomatoes, and chopped red onion. Gently toss the ingredients together using a spatula.

In a separate bowl, whisk together mayonnaise, sour cream, lime juice, chili powder, salt, and pepper until the dressing is smooth and creamy. Taste the dressing and adjust the seasoning if needed before moving on.

Pour the creamy dressing over the vegetable mixture in your large bowl. Gently toss everything together, making sure to coat each piece evenly.

To finish, generously sprinkle crumbled feta cheese and chopped cilantro over the top of the salad. Allow the salad to rest for a few moments before serving.