Bake the cornbread according to your favorite recipe or package instructions. Allow it to cool completely before cutting into cubes.

In a large mixing bowl, combine the cherry tomatoes, cucumber, bell pepper, red onion, and corn.

In a separate bowl, whisk together the mayonnaise, apple cider vinegar, dijon mustard, salt, and black pepper until smooth.

Layer the cornbread cubes on top of the vegetable mixture. Drizzle the dressing over the top and gently toss to combine.

Serve immediately or refrigerate for up to an hour before serving to allow flavors to meld.