Preheat the oven to 375 degrees F. Grease a 7 or 8-inch round cake pan with cooking spray, line a parchment paper over it, and set it aside.
In a microwave-safe bowl, combine chocolate chips and butter. Melt the chocolate chips for a minute stirring in between, until everything is melted to smooth.
To the melted chocolate, add cocoa powder, coffee powder, and salt. Mix it and set it aside.
In a large bowl, combine sugar and eggs. Beat them with a hand mixer for 3-5 minutes until the sugar is completely dissolved. Add vanilla extract and mix.
Pour the chocolate mixture and fold them with the egg mixture until thoroughly mixed. Do not overmix the batter.
Transfer the batter to the prepared cake pan and bake them for 25-30 minutes.
Once done, allow the cake pan to cool down for 10 minutes. Run a butter knife around the edges to loosen the cake and flip.
Dust some confectioners sugar on top. Decorate the cake with whipped cream and raspberries.
Slice the chocolate cake and serve.