1/2–2/3cupjam of your choiceAdjust for spreadability; fig, apricot, and cherry work well.
Instructions
Preparation
Preheat oven to 350°F (175°C) and line baking sheets with parchment.
In a large bowl, beat the softened butter with granulated sugar until light and fluffy (about 2–3 minutes).
Beat in the eggs one at a time, scraping the bowl, and then stir in vanilla.
In a separate bowl, whisk together the flour, baking powder, and salt.
Gradually add the dry mix to the wet ingredients and mix just until incorporated.
Chill the dough by dividing it in half, shaping into discs, wrapping in plastic, and refrigerating for at least 30 minutes.
Filling Preparation
In a bowl, combine ground walnuts, granulated sugar, powdered sugar, cinnamon, and nutmeg.
Add jam spoonful at a time and stir until the mixture is spreadable.
Assembly and Baking
On a lightly floured surface, roll one half of the dough into a rectangle about 1/4-inch thick.
Spread half the nut filling evenly over the dough, leaving a small border.
Roll the dough tightly from one long edge into a log and pinch the seam to seal.
Slice the log into 1-inch pieces and place cut-side down on the prepared baking sheet.
Repeat with the second half of the dough.
Bake for 12–15 minutes, until the edges are lightly golden.
Allow cookies to cool completely on a wire rack before serving.
Notes
Store in an airtight container for up to 3 days. Refrigerate for up to 7 days if the filling is perishable. Freeze baked slices for up to 3 months. For best results, use a sharp serrated knife for slicing.