Preheat your oven to 350°F (175°C). Gather your ingredients and equipment, including a food processor and parchment paper.

In your food processor, add the gluten-free all-purpose flour, shredded cheddar cheese, and cold butter. Pulse until it resembles coarse breadcrumbs, about 30 seconds.

Gradually drizzle in cold water while pulsing until the mixture forms a cohesive dough ball, about 1-2 minutes.

Place the dough between two sheets of parchment paper and roll out to about 1/8-inch thickness.

Cut the rolled dough into 1-inch squares and poke holes in the center of each square. Sprinkle flaky sea salt on top.

Transfer the squares onto a baking sheet lined with parchment paper and bake for 12-15 minutes until lightly golden.

Let the Cheez-Its cool completely on the baking sheet before enjoying or storing.