Combine chocolate morsels and butter in a medium saucepan; cook over medium heat until melted, stirring often. Set aside; cool slightly.
Whisk together eggs and next 3 ingredients in a medium bowl. Add melted chocolate mixture, cocoa, and next 4 ingredients; stir until well combined. Pour into a lightly greased 9-inch springform pan. Bake at 350º for 40 minutes or until set. Cool on a wire rack 30 minutes. Cover and chill 1 hour.
Run a knife around edge of pan, and release sides. Spread top of cake with Ganache, allowing it to run down sides. Cover loosely, and chill 8 hours. Store in refrigerator.
*If you can't find instant espresso granules or desire a more subtle coffee flavor, substitute instant coffee granules for the instant espresso granules.