Slice peppers partway open, carefully scrape out the insides, including the seeds.
Roast at 350 degrees for 10-12 minutes.
Melt the chocolate, butter and cream over very low heat, stirring constantly. Once the peppers are cooled, dip them in the melted chocolate. If you're having trouble keeping peppers together after slicing, use toothpicks to hold the sides together.
Refrigerate until set.
Once the chocolate sets, you can carefully remove the toothpicks.