Ingredients
- 2 cups all-purpose flour
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 2 teaspoons instant espresso powder I used Café Bustelo
- 3/4 cup salted butter cut into 3 pieces
- 1 cup light brown sugar
- 1/2 cup granulated sugar
- 1 large egg
- 1 large egg yolk
- 1 10-oz package dark chocolate chips or 12-oz pkg semi-sweet chocolate chips