How to Roast Red Peppers: Cut the peppers into halves or quarters, removing the seeds and white membranes. Place on a baking sheet and roast at 500°F until the skin blisters and turns black in places, and are fork-tender (placing under broiler will speed this process, otherwise just place in the middle rack). Immediately place them in a small bowl and cover tightly with plastic wrap - this will loosens the skins making them easier to peel. Let sit for 5 minutes, then peel skins off and discard.