Changing a email reply from “Reply” to “Reply All”

Sometimes when I'm responding to a group email, I push the "reply" button to create a new email, start working on it, and then decide that I really want to reply to ALL of the original recipients. Is there a way in Outlook 2011 to change an email response from "Reply" to "Reply All" after its been created? Entourage had a feature where you were prompted to change the response to "Reply All," and Apple Mail has that feature, too. Now, I have to copy all of the text in the mail so far, delete the email, start a new response using the "Reply All" button, and then paste the text into the new response email, or manually cut and paste all of the other recipients of the original email into my response. Neither are very elegant or simple. Is there another way?