Preheat oven to 350°F. Line cookie sheets with parchment paper.
In a large bowl, whisk together flour, sugar, cocoa powder, baking soda and salt. Set aside.
Combine chocolate and butter in a microwave-safe dish and microwave for 30 second intervals until melted, stirring after each 30 second interval.
Stir coffee granules into the chocolate mixture.
Pour melted chocolate into flour mixture and stir. Batter will be thick.
Add eggs and vanilla. Stir until all ingredients are combined.
Drop by spoonfuls onto parchment lines cookie sheets.
Bake in preheated oven for 10-12 minutes. Cookies will be soft in the centre.
Allow to cool on cookie sheet for 1-2 minutes before transferring to cooling rack.
Store cooled cookies in an airtight container for up to one week.