Macadamia Shortbread

Directions

1. Preheat oven to 375°F with rack in middle.
2. Toast nuts in a 4-sided sheet pan in oven until golden, 8 to 10 minutes, then cool and coarsely chop. Leave oven on.
3. Stir together butter, sugars, vanilla, and salt in a bowl with a rubber spatula until combined well. Stir in flour, nuts, and chocolate until a soft dough forms.
4. With floured fingers, pat dough into a 10-inch square (about 1/2 inch thick) on a baking sheet. Score into desired size with tip of a knife. Bake until golden, 20 to 25 minutes.
5. I used a pastry cutter.
6. *
7. Cool on baking sheet 10 minutes, then cut into wedges (while still warm) with a sharp knife. Transfer to a rack to cool completely, about 30 minutes.