Preheat the oven to 400°F then wash and dry the peppers. Slice each one and half and clean out the seeds.
Line a cookie sheet with parchment paper, arrange the peppers on top and bake them in the oven for five minutes. Remove and allow to cool for 5-10 minutes, until cool enough to handle.
Spoon herbed cheese inside of each pepper then drizzle with balsamic reduction. Serve immediately or refrigerate for up to 1 day prior to serving (without reduction).