01 - Heat oven to 425°F.
02 - Wash and dry whole bell peppers; arrange on parchment-lined baking sheet.
03 - Cook peppers for 25–30 minutes, turning once or twice until skins are charred and blistered.
04 - Transfer peppers to a heatproof bowl; cover tightly and let steam for 10 minutes.
05 - Remove skins, stems, and seeds; slice peppers into strips.
06 - Combine pepper strips with olive oil, salt, black pepper, and optional balsamic vinegar.
07 - Stir in minced garlic and herbs if desired. Serve warm or at room temperature.