How do i get a Custom Field to show up in Google Search Results / RSS feed

In order to get a subhead that i could put in a feature bar, i created a custom field using custom press for subheads. It works great.

I recently realized that my custom fields are not actually part of the post in the way they should be. When google scrapes the page, the subhead information (which is key info) is not showing up in the search excerpt. They also don't show up in RSS readers.

Is there a way for me to inject the custom field to show up in it's proper spot at the top of a post?