Pre-heat oven to 180°c (160°c for fan assisted ovens or Gas Mark 4) and grease a baking sheet with butter. Set aside.

In a large bowl, sift the flour and salt. Add the butter and rub together with your fingers until the ingredients come together.

Add the mustard, cheese and egg (keeping back a little egg for later) and continue to mix together with your hands until you have a sticky dough.

Turn onto a well floured work surface and roll into a large sausage, about 2cm in diameter. Cut into your desired bread stick size and place onto your pre-greased baking sheet.

Once all bread sticks are in place, brush each with the remaining egg before topping with a sprinkle of salt and pepper.

Bake for 15-20 minutes until golden in colour.

Transfer to a wire rack to cool completely before enjoying with your dip of choice.