Prepare the Corn: If using fresh corn, boil or grill the corn until tender, then let it cool. If using canned corn, simply drain it.
Drain the Beans: Rinse the black beans under cold water to remove excess sodium and let them drain.
Chop the Veggies: Dice the avocado, chop the red onion, and bell pepper, and halve the cherry tomatoes.
Combine Ingredients: In a large mixing bowl, add the corn, black beans, avocado, tomatoes, red onion, and bell pepper.
Dress the Salad: Squeeze fresh lime juice over the salad and season with salt and pepper to taste. Toss gently to combine all the ingredients.
Garnish: If using, sprinkle chopped cilantro and jalapeño on top for an extra burst of flavor.
Serve: Enjoy immediately or let it chill in the refrigerator for about 30 minutes for the flavors to meld.