Pre heat the oven at 350f , grease and line an 8inch x 8inch square baking tray with baking paper on all four sides.
Combine milk, vinegar, mashed banana, oil, cane sugar and light brown sugar in one bowl.
Combine all of the dry ingredients in a separate bowl. Mix the dry ingredients into liquid ingredients with a hand whisk and stir until fully combined.
Pour all of the cake batter into the prepared baking tray and level it an even layer. Bake for 25min approx or until firm to touch on top. Let it cool completely.
For the chocolate fudge topping: Combine whipping cream, dark chocolate, cocoa powder, powdered sugar, butter, salt and vanilla extract.
