Preheat the oven

• Preheat the oven to 325 °F (165 °C).

Make the dough

• Add the cheddar, flour and salt to a food processor and pulse to combine.
• Add the butter and pulse until the mixture is crumbly.
• Add the milk and pulse until the dough comes together when pinched between two fingers.

Roll out the dough

• Transfer the dough to a lightly floured surface.
• Roll into a large rectangle, as thinly as possible (1/8 inch or thinner) so the crackers get super crispy.

Cut and shape the crackers

• Slice the dough into 1-inch squares.
• Poke a hole all the way through each cracker.

Bake

• Transfer the crackers to parchment-lined baking trays and sprinkle with more salt.
• Bake until deep golden brown on the bottom of each cracker.