½ cup butter 1 cup grated cheddar cheese 1 tsp mustard 1 egg 1 tsp salt 1/8 tsp black pepper 1 cup all purpose flour ½ cup whole wheat flour
Mix all ingredients in a a bowl. Refrigerate the dough for 30 minutes. Roll it on a floured surface and cut in sticks. Place them on a parchment paper or greased baking tray. Bake them in the upper third of oven at 350 F for about 13 minutes or until they become golden and start browning at the edges. Remove from the baking tray after few minutes and serve warm or at room temperature.