Food Network shows you how to make Banana Bread Lava Cake. Add all-purpose flour, baking powder, baking soda, kosher salt, cinnamon, allspice and ground ginger to a bowl then whisk until ingredients are well combined and set aside. To another bowl, add melted unsalted butter, granulated sugar, light brown sugar, mashed banana, sour cream, eggs and vanilla extract, then whisk until well combined. Add the flour mixture to the second bowl and whisk again until everything is mixed together. Pour about half the batter into a large greased and floured ramekin. Stack a couple of Klondike bars in the middle of the batter then cover with the remaining batter. Bake for 45 minutes at 350 degrees F. Let it cool, top with confectioners’ sugar, then dig in.