Cinnamon-Swirl Cookies

Ingredients

For the dough
• 2 1/2 cups all-purpose flour, plus more for surface
• 1 teaspoon salt
• 1/2 teaspoon baking soda
• 8 ounces (2 sticks) unsalted butter, softened
• 1 cup granulated sugar
• 1/4 teaspoon freshly grated orange zest (left this out)
• 2 large eggs
For the filling
• 2 ounces (4 tablespoons) unsalted butter, softened
• 1/2 cup light-brown sugar
• 1/2 cup dark-brown sugar
• 1/2 cup chopped walnuts, toasted (1 1/2 ounces)
• 1/2 teaspoon ground cinnamon

Instructions

1. Make the dough: Sift flour, salt, and baking soda into a large bowl. Beat butter, sugar, and orange zest with a mixer on medium speed until smooth, about 3 minutes.
2. Beat in eggs. Reduce speed to low. Add flour mixture gradually, and beat until just combined. Divide dough in half, wrap each half in plastic, and refrigerate for 1 hour (or overnight).
3. Turn half the dough onto floured parchment. Roll into a 10-by-12-inch rectangle, then trim edges straight. Repeat with remaining half of dough. Transfer rectangles on parchment to a baking sheet, and refrigerate until firm but pliable, about 10 minutes.
4. Make the filling: Mix all the ingredients in a small bowl until well combined.
5. Crumble mixture evenly over rectangles.
6. Starting on a long side, roll 1 rectangle into a log, and wrap it in the parchment. Repeat with remaining rectangle.
7. Refrigerate logs for 1 hour (or overnight).
8. Preheat oven to 350 degrees. Cut each log crosswise into 1/4-inch-thick slices.
9. Transfer to parchment-lined baking sheets, and bake until edges are golden brown, about 19 minutes.
10. Let cool on sheets on wire racks. Cookies will keep, covered, for up to 3 days.