Preheat oven to 350℉. Line an 9x5 inch loaf pan with parchment paper.
Brownie Layer:
In a medium bowl, add in the Greek yogurt, peanut butter, cacao powder, maple syrup, salt and mix together until combined. Next, transfer batter to the loaf pan and spread out evenly.
Cheesecake Layer:
In another medium bowl, add in the eggs, Greek yogurt, arrowroot powder, vanilla, sugar, salt and mix together until combined. Transfer this mixture on top of the brownie layer and spread out evenly. Bake for 40-45 minutes. Transfer to a wire rack to cool completely.