1. Preheat the oven to 350 degrees F. Grease a 10-inch springform pan.

2. In a separate bowl, whisk together the all-purpose flour, baking powder, cocoa powder and pinch of salt.

3. Beat the unsalted butter and white granulated sugar with the whisk attachment of the mixer until fluffy (about 3 minutes)
4. Add the eggs one at a time and combine thoroughly.
5. Mix in half the dry ingredients, mix in the milk and then the other half of the dry ingredients.
6. Transfer the batter to the greased springform pan and bake for 30 minutes or until a knife inserted into the center of the cake comes out clean.
   
7. Remove the cake from the oven and let cool completely.
8. Transfer the cooled cake to a serving plate. Use a spoon to create a hole in the middle of the cake, digging about two inches deep. Be sure to leave an untouched 3/4 inch frame around the sides.
9. Collect the discarded cake pieces in a bowl and crumble them into a fine texture.
10. In a small bowl whisk together the cornstarch and powdered sugar.
11. Beat the cream with a whisk attachment. Add the teaspoon of pure vanilla extract and slowly add the cornstarch, powdered sugar mixture. Stop beating the cream when stiff peaks form.
12. Fold in the mini chocolate chips or shaved chocolate pieces.
13. Peel and slice the bananas into disks. Lay them down forming a layer inside the hollowed out cake frame.
    
14. Spread the whipped cream onto the cake forming a dome. Sprinkle the reserved cake crumbs over the cream dome to cover it completely. Make sure no white is showing.
    
15. Place the cake in the refrigerator and let it stand for 2 hours.
    

In the meantime, make the candy mole:

1. Depending on how big you want your mole decoration to be, Take a hand full of marzipan or fondant and knead a few drops of brown food coloring into the mass (skip this step if you are using chocolate fondant.)
2. Pinch off a piece and roll into a ball, then form a pear shape. Use a toothpick to poke holes in for the eyes and run a line around the pointed part of the pear shape for the mouth.
3. Roll the rest of the brown colored marzipan between your hands to form a U shape. Place the head on top of the U shape with the nose pointing between the two sides of the U.
4. Color small handful of marzipan pink. Roll a small ball and attach to the pointed part of the head to create a nose.
5. Form the hands and attach to the ends of each arm of the U shape. If you have a very small flower cutter, you can use this to cut out the hands.
6. Remove the cake from the refrigerator. Place the mole on top of the cake and gently push it into the cream to secure it.
   
7. Cut the cake and serve.