Melt chocolate chips and butter together in a microwave safe container on medium heat, 30 second intervals, stirring in between, until chocolate has fully melted.
Combine boiling water and instant coffee, stirring to dissolve coffee granules. Pour 1/3 cup coffee into melted chocolate and stir until fully combined.
Let cool to room temperature.
Preheat oven to 325F.
Grease and flour 9x13 baking pan with cocoa powder making sure to tap out all excess powder.
Beat 3 eggs in a mixing bowl until light and frothy.
Beat in sugar for two minutes on medium speed.
Reduce speed to low and and beat in room temperature chocolate-coffee mixture.
Stir in flour just until combined.
Pour into prepared pan. Bake for 40 minutes or until brownies are set. Don't worry if the top cracks. We're going to be covering all that up :) Let brownies cool completely.