Preheat oven to 350 F. Spray a 10” springform cake pan or a 13” sheet pan with non stick spray.
In a large bowl, combine flour, baking powder, baking soda, salt and nutmeg.
In a small bowl, combine the bananas and yogurt and mix to combine.
In the bowl of an electric mixer, combine the butter and sugar and mix until light and creamy.
Add eggs, one at a time, beating well after each addition. Add vanilla extract and mix well.
Add banana-yogurt mixture and mix well.
Add flour in two batches, mixing well after each addition.
Transfer to prepared cake pan. Bake for 1 hour, until a knife inserted comes out clean.
To decorate, make chocolate ganache recipe and frost cake. See notes for ganache recipe link.
Sprinkle chocolate pebble candy on top. Decorating done!!!