Follow these easy steps to create the delightful Grilled Corn Salad with Tomatoes:

1. Prepare the Grill: Preheat your grill to medium-high heat.
2. Grill the Corn: Place the corn directly on the grill. Grill for about 10-15 minutes, rotating occasionally, until the kernels are tender and slightly charred.
3. Cool the Corn: Once grilled, remove the corn from the grill and allow it to cool for a few minutes.
4. Cut the Corn: After cooling, cut the corn kernels off the cob and place them in a large mixing bowl.
5. Add Tomatoes and Onions: Add the halved tomatoes and chopped red onion to the bowl containing the corn.
6. Mix Dressing: In a small bowl, whisk together olive oil, red wine vinegar, salt, pepper, and garlic powder if using.
7. Combine Ingredients: Pour the dressing over the corn, tomato, and onion mixture. Stir gently to combine all ingredients well.
8. Add Fresh Basil: Fold in the chopped basil and, if desired, diced avocado for an extra creaminess.
9. Taste and Adjust: Adjust seasoning if necessary, adding more salt and pepper to taste.
10. Serve: Let the salad sit for about 5 minutes before serving to allow the flavors to meld.