1. In a large mixing bowl, whisk together the flour, salt, pepper, rosemary, and Parmesan.

2. Add in the cold, cubed butter and use your fingers or a pastry cutter to blend until the mixture resembles coarse crumbs.

3. Pour in the water and mix with a fork until a shaggy dough forms. Add more water a teaspoon at a time if needed.

4. Turn the dough onto a floured surface and knead briefly until smooth.

5. Divide the dough in half and roll each portion thin (about 1/8 inch) between parchment paper.

6. Cut into desired shapes using a knife or pizza cutter.

7. Transfer the parchment with crackers onto baking sheets.

8. Preheat oven to 375°F (190°C). Brush cracker tops with olive oil and sprinkle with flaky sea salt.

9. Bake for 12–15 minutes or until golden and crisp.

10. Cool completely on wire racks and store in an airtight container.