Metadata for How-to Instructions
WP Recipe Maker can not only be used for food recipes. The plugin works for DIY, crafts and other How-to instructions just as well and will automatically include How-to metadata Google wants to see.
To add a How-to recipe, choose the correct recipe type when creating/editing a recipe:
Instead of ingredients you'll be adding materials (the supplies you'll be using when following these instructions), but apart from that the fields are pretty much the same.