This seemed like an apt opportunity to check the Veganomicon's method for roasting bell peppers (p. 33). It's easy enough. Preheat the oven. While you're doing that, cut the peppers in half, and seed them. Then put them on a baking sheet, coat lightly with oil, and pop them in the oven.
Terry and Isa suggest leaving them in the oven for 20-25 minutes, but at least in our electric oven, that wasn't quite long enough to get the nice charred skin. Still, they wound up soft and flavorful, and we now have a colorful collection of peppers in the freezer to see us through winter.