1. In the bowl of a stand mixer fitted with a paddle attachment, cream together butter and sugar until just smooth, about 2 minutes. 2. Add flour, whole wheat flour, salt and milk, and mix until dough just comes together. 3. Roll dough into a 1-inch wide log, wrap in plastic wrap, and refrigerate one hour. 4. Adjust oven rack to middle position and preheat oven to 350 degrees F. Line a baking sheet with parchment paper. 5. In a small bowl, make egg wash by beating egg with water. 6. In another small bowl, put za'atar spice. 7. Cut dough into 1/4-inch slices. Brush each with egg wash and then press lightly into za'atar blend. 8. Place cookies on parchment-lined baking sheet and bake until golden at the edges, about 15 minutes. 9. Let cool 5 minutes in pan, then transfer to a wire rack to finish cooling. ---------------------------------------------------------------------------
Nutrition
Ingredients