Preheat the oven to 180 degrees. Grease an 8 inch springfoam pan.
Whisk the dry ingredients for the cake together. Add the wet ingredients and fold in till well combined.
Spread the batter at the bottom of the pan and flatten the top. Bake for 10 minutes till done.
Allow to cool completely in the pan.
Meanwhile, melt the chocolate on double boiler method. Allow it to cool slightly.
Warm the milk and bloom the gelatin in it. Set aside.
Whip the cream and sugar till soft peaks. Add the melted chocolate and gelatin milk and whip till well combined.
Pour over the cooled cake and tap the pan to flatten the top. Keep in the fridge for it to set.
Warm the cream in the microwave. Add the chocolate chips and let it sit for sometime. Stir till smooth. Allow to cool. Pour over the set mousse and return back to the fridge to set for at least two hours.
Slice and serve.
Notes
If you are using whipping powder instead of whipping cream, then use 2 sachets, beaten into one cup of milk and a dash of vanilla essence, till done.