Chocolate Shortbread Fingers

Preheat the oven to 325 degrees F. Line a 9X13-inch pan with parchment paper or foil, letting the parchment or foil overhang on two sides so the bars can easily be pulled out of the pan after they are baked and cooled. Lightly grease the foil or parchment with cooking spray. Set aside.

In a small bowl, whisk together the flour, cocoa powder, cinnamon, salt and baking soda. Place the butter and superfine sugar in a mixing bowl and beat with a handheld electric mixer (or use an electric stand mixer) until light and fluffy – 3-4 minutes. Scrape down the sides of the bowl and add the flour mixture. Beat until just combined.

Spread the dough into the prepared pan, using a spatula or your fingers to even out the surface. Chill the dough for 15 minutes. Prick the dough all over with the tines of a fork and bake for 18-22 minutes. The shortbread will be slightly puffed but still soft. It will firm up as it cools.

While the shortbread is still hot, cut the baked dough into fingers by cutting down the center the long way and then cutting into 8-10 strips across. Sprinkle the tops of the bars with granulated sugar and let the shortbread cool completely in the pan. Using the parchment or foil overhang, lift the bars from the pan, gently break into pieces (where they are cut) and serve at room temperature. The bars will keep for 2-3 days covered at room temperature.