Make the dressing: In a small food processor, combine the avocado mayonnaise, olive oil, cilantro, lime, serrano, garlic powder, onion powder and a few generous pinches of salt. Pulse until combined. Chill until ready to use.
Step 2
Slice the kernels off of the grilled corn and place in a large bowl. Add the red pepper, green pepper, cucumber, peaches, avocado, basil, lime juice, a few pinches of salt, and toss. Add a few tablespoons of dressing, toss again, then taste and add more dressing and/or salt to taste. Serve with extra dressing and lime slices on the side.