Preheat oven to 350℉. Line a small 6 inch round cake pan with parchment paper.
In a large bowl, add in your bananas, Greek yogurt, eggs, arrowroot powder, salt and mix together until incorporated. Transfer batter to cake pan and spread out evenly. Bake for 1 hour or until toothpick comes out clean. Transfer to wire rack and let cool completely.
Caramel Topping:
In a small pan over medium heat, add in coconut oil, maple syrup, peanut butter, salt and mix together until combined and smooth - a few minutes. Please note that the sauce will be drippy at first but once you take it off the heat, give it 15-20 minutes to thicken up and resemble a more caramel texture.
Store leftovers in an airtight container in the fridge for up to 4 days.
Use any starch in place of the arrowroot powder, like cornstarch, all purpose flour, tapioca flour, gluten free flour or vanilla protein powder.
If using, any granulated sweetener works here.
Nutritional Infoincludes cake ingredients ONLY. Does not include powdered sugar and caramel topping.
For the Caramel Topping, you can use any neutral oil or melted butter. You can use any nut butter or seed butter. You can use honey or agave in place of the maple syrup.