In the work bowl of a food processor fitted with the shredding disc attachment, grate cheese; transfer to a medium bowl. Switch to the blade attachment.
In a large bowl, combine our, salt, garlic powder, dry mustard, black pepper, and red pepper; sift mixture once.
Add our mixture and thyme to food processor; pulse 2 to 4 times to combine. Add cheese and butter; pulse until a dough ball forms.
Using a cookie press tted with a ribbon disk, pipe dough into long straight lines, about ½- to ¾-inch apart, on ungreased baking sheets. Gently pat down to ensure ribbons are lying at on baking sheets.
Bake until lightly browned, 8 to 10 minutes. Using a small sharp knife, gently cut into 2½-inch-long pieces. Using a small o set spatula, loosen from pans. Let cool completely. Garnish with thyme, if desired. Store in an airtight container for up to 5 days.
Recipe by Southern Lady Magazine at https://southernladymagazine.com/upgrade-your-holiday-baking-with-swans-down-cake-flour/