Name: Espresso and Rye Cookie Bars
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Yield: 24
Ingredients: 1 cup unsalted butter, room temperature; 1 cup dark brown sugar; ½ cup granulated sugar; 1 large egg, room temperature; 2 tsp vanilla; 1 TBSP espresso powder; 1¼ cups all purpose flour; 1 cup dark rye flour; ¾ tsp baking powder; 1 tsp baking soda; ½ tsp kosher salt; 1¾ cups chocolate chips (I use a mix of bittersweet and semi-sweet); flakey sea salt for sprinkling, optional