Prepare the Cake Layer
Preheat the oven to 350°F (175°C). Grease a 10-inch springform pan and line the bottom with parchment paper.
Make the Batter
In a mixing bowl, whisk together the eggs, sugar, and vanilla extract until light and fluffy. Gradually add the flour and baking powder, mixing until smooth.
Bake the Cake
Pour the batter into the prepared pan and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean. Let the cake cool completely before assembling.
Prepare the Mousse Layer
In a blender, puree the chopped mango until smooth. In a separate bowl, whip the heavy cream until stiff peaks form.
Combine the Mousse Ingredients
Mix the mango puree with the whipped cream cheese and sugar. Dissolve the gelatin in warm water, let it cool slightly, and fold it into the mango mixture. Finally, gently fold in the whipped cream.
Assemble the Cake
Place the cooled cake layer back into the springform pan. Pour the mango mousse over the cake, smoothing the top with an offset spatula.
Chill and Set
Refrigerate the cake for at least 4 hours or until the mousse is fully set.
Serve
Remove the cake from the springform pan and decorate with fresh mango slices, whipped cream, or other toppings of your choice.