About the corn. Fresh sweet corn on the cob is best for this recipe. However, if you really have a hankering for sweet corn when it’s not in season, use about 3 cups frozen corn kernels. Steer clear of canned corn: it’s just too soggy. Thaw the frozen corn in a strainer and let the moisture drain off. Once thawed, toss the kernels with a little oil on a sheet pan. Shake them into a single layer and roast them under your oven’s broiler to mimic the effect of grilling the corn. Let it get nice and browned then proceed with the recipe.
About the basil and parsley. You must use fresh. Dried basil and parsley are no more flavorful than sawdust.
About the peppers. Some folks find green peppers bitter. If that’s you, just use all red and yellow (or even orange!) peppers.