chocolate banana cake

i like to make chocolate cake and add the filling with banana , very yummy and delicious.
i will share the recipe .
Ingredients :
chocolate chiffon cake
A. 30 g cocoa powder ( mixed with 120 ml water )
     4 egg yolks
     100 g castor sugar
     130 g self raising flour
     1/2 tsp baking powder
     1/2 tsp sodium bicarbonate
     60 ml corn oil
     1 tsp vanilla essence
B.  4 egg whites
     60 g castor sugar
     1/4 cream of  tar tar

bake in 9 " mould 180 for 40 minutes

cake filling :

500 ml chocolate whipped cream
1 tsp vanilla essence
1 1/2 tbsps instant coffee ( mixed with 1 tbsp hot water )
1 tbsp gelatine ( dissolved in 40 ml water )
6 ripen banana

chocolate frosting

140 ml UHT whipped cream
350 g cooking chocolate
1 tbsp butter

heat cream in double boiler and add chocolate and butter. stir until chocolate has melted.
leave to cool slightly before pouring in top of cake .