How can I get a text field on my form to display in the auto Responder email I recieve and my customer recieves?

To add Text Fields to your email template, whether for Notification (what you get) or Autoresponder (what your users receive), you need to add them manually. Text Fields are not Input Fields that's why. The only fields that will automatically be placed on the default email template would be Input Fields.

Since it's just a line of text (Roast Date: Thursday 3/9/17), just copy and paste it on your email template.