Preheat oven to 375 degrees.
In the bowl of a mixer cream together sugar, butter, egg, and Greek yogurt.
While this is creaming, in a separate bowl mash the two bananas and set aside.
In another bowl whisk together the flour, baking soda, and salt.
Then slowly pour these into the bowl of the mixer with the mixed sugar ingredients.
Add the bananas and vanilla.
Once all is mixed pour the mixture evenly into a greased 8x8 inch pan or loaf pan.
Bake for 20-25 minutes until done.
While bread is baking, in the bowl of a mixer, mix the butter and confectioner sugar until it is creamed.
Add in the heavy cream and stir until smooth.
With a rubber spatula fold in the caramel sauce.
Top on the bread once removed from the oven and cooled.