Gather all your ingredients measured and ready to go.
In a large mixing bowl, combine the all-purpose flour, grated Parmesan cheese, finely chopped rosemary, garlic powder, salt, and black pepper. Mix well.
Add the softened butter and mix until the mixture resembles coarse crumbs.
Gradually add cold water, one tablespoon at a time, mixing until the dough forms a cohesive ball.
Turn the dough out onto a lightly floured surface and roll it out to about 1/8-inch thickness.
Cut the rolled-out dough into desired shapes and place on prepared baking sheets.
Preheat your oven to 350°F. Bake the crackers for 12-15 minutes until golden brown and crispy.
Let them cool on the baking sheets for a few minutes, then transfer to a wire rack to cool completely.