Cooking Instructions
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Step 1
Dissolve the
Instant Espresso Powder (7 g)
in the
Water (15 mL)
. Set aside to cool.
Step 2
Working with a stand mixer, preferably fitted with a paddle attachment, or with a hand mixer in a large bowl, beat the
Unsalted Butter (225 g)
and
Powdered Confectioners Sugar (75 g)
together on medium speed for about 3 minutes, until the mixture is creamy and very smooth.
Step 3
Beat in
Pure Vanilla Extract (2 mL)
, espresso mixture, and
Coarse Sea Salt (as needed)
. Reduce the mixer speed to low and add the
All-Purpose Flour (250 g)
mixing only until it disappears into the dough. Don’t work the dough much once the flour is incorporated.
Step 4
Fold in the
Bittersweet Chocolate (115 g)
with a sturdy rubber spatula.
Step 5
Using the spatula, transfer the soft, sticky dough to a gallon-size zipper-lock plastic bag.
Step 6
Put the bag on a flat surface, leaving the top open, and roll the dough into a 9x10 1/2-inch rectangle that’s 1/4-inch thick.
Step 7
As you roll, turn the bag occasionally and lift the plastic from the dough so it doesn’t cause creases. When you get the right size and thickness, seal the bag, press out as much air as possible, and refrigerate the dough for at least 2 hours, or for up to 2 days.
Step 8
Position the racks to divide the oven into thirds and preheat the oven to 325 degrees F (160 degrees C). Line two baking sheets with parchment paper.
Step 9
Place the plastic bag on a cutting board and slit it open. Turn the firm dough out onto the board (discard the bag) and, using a ruler as a guide and a sharp knife, cut the dough into 1 1/2-inch square.
Step 10
Transfer the squares to the baking sheets and carefully prick each one with a fork, gently pushing the tines through the cookies until they hit the sheet.
Step 11
Bake for 18-20 minutes, rotating the sheets from top to bottom and front to back at the midway point. The shortbreads will still be very pale at this point.
Step 12
Transfer the cookies to a cooling rack. If you’d like, dust the cookies with confectioners’ sugar while they are still hot. Cool the cookies to room temperature before serving.
