Combine flour, cocoa, baking soda and salt in a small bowl. Beat butter, brown sugar and granulated sugar in a large mixing bowl until light and creamy. Beat in egg and vanilla extract.
Combine coffee crytals and water in small bowl, stir until coffee is dissolved. Add to sugar mixture; mix well. Gradually mix in flour mixture. Stir in morsels.Drop by rounded teaspoon onto prepared baking sheets.
Bake for 10 to 12 minutes, or until edges are crisp. Remove to wire racks to cool completly.