Walnut Shortbread

Directions

1. 1
   Preheat the oven to 350F.
2. 2
   Butter and flour two 8-inch round cake pans; set aside.
3. 3
   In a food processor, combine the nuts, flours, sugar, and salt; pulse until the nuts are finely ground but not oily.
4. 4
   Add the butter, oil, lemon zest, and lemon juice; pulse until the mixture just comes together.
5. 5
   Divide the mixture between the pans and press in until even.
6. 6
   With a sharp knife, cut each round of dough into 8 wedges.
7. 7
   Lightly prick the tops with the tines of a fork.
8. 8
   Bake until set and pale tan, about 22 minutes.
9. 9
   Transfer to a wire rack and cut through each wedge.
10. 10
    Cool 10 minutes, then invert onto a plate and transfer to a wire rack to cool completely.