Step 1
Prepare vegetables by brushing lightly with olive oil and salt and pepper.
Step 2
To make grilling onions easier, thread onto bamboo skewers
Step 3
Grill corn, red pepper and onions on all sides until slightly charred, about 8 minutes.
Step 4
Let stand until corn is cool enough to handle.
Step 5
Remove kernels from the cobs, dice bell pepper, remove onion from skewers and chop into bite size pieces.
Step 6
Combine corn, tomatoes, bell pepper and onion in a medium bowl.
Step 7
Stir in basil, vinegar and oil and salt and pepper