Espresso Chocolate Chip Shortbread Cookies

These cookies are. so. addicting. I ate one nonchalantly and before I knew it, I had eaten 6. SIX. In less than ten minutes. Thank goodness I had a lot left to take to my family reunion that day. They are buttery, melt-in-your mouth, chocolately delicious. Perfect for parties, potlucks, hoarding, whatever. Oh, and be on the lookout for Halloween specials! I will post at least 5 Halloween-themed desserts! What would you like to see?

I didn't have any espresso powder on hand, so I used instant coffee. If you're looking for a deeper intense coffee flavor, use the instant espresso powder and toss in some Kahlua.

Using a plastic bag to roll out the dough made the process SO easy. I plan to incorporate this idea into many of my rolled cookie ideas! 

I used an icing spatula to transfer the cookies to the cookie sheet!

Ingredients

Adapted from Use Real Butter

• 1 tbsp instant espresso powder (I used instant coffee, and it worked just fine)
• 1 tbsp boiling water
• 2 sticks of unsalted butter, room temperature
• 2/3 cup powdered sugar
• 1/2 tsp vanilla extract
• 2 cups all-purpose flour
• 4 oz. bittersweet/semisweet chocolate, finely chopped OR 3/4 cup mini chocolate chips
• powdered sugar, for dusting (optional)

Directions

• Dissolve espresso powder in boiling water. Set aside to cool. Beat butter and confectioners’ sugar together on medium speed for about 3 minutes, until the mixture is very smooth. Beat in vanilla and espresso, then reduce mixer speed to low and add flour, mixing only until it disappears into the dough. Don’t work the dough much once the flour is incorporated. 
• Fold in the chopped chocolate or chips with a sturdy rubber spatula. Using the spatula, transfer dough to a gallon-size zip-loc bag. Put bag on a flat surface, leaving the top open, and roll the dough into a 9 x 10 1/2 inch rectangle that’s 1/4 inch thick. 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, pressing out as much air as possible, and refrigerate the dough for at least 2 hours, or for up to 2 days. 
• Preheat the oven to 325°F. Put 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 squares. 
• Transfer the squares to the baking sheets. Bake for 18 to 20 minutes, rotating the sheets from top to bottom and front to back at the midway point. The shortbreads will be very pale–they shouldn’t take on much color. Transfer the cookies to a rack. If you’d like, dust the cookies with confectioners’ sugar while they are still hot. Cool the cookies to room temperature before serving. Makes about 3 dozen.