If you're looking for a low-calorie peanut butter chocolate cake recipe, this one is perfect for you. The cake is made with almond flour and coconut flour, which are both low in calories and high in fiber. The peanut butter provides a good source of protein and healthy fats, while the dark chocolate is rich in antioxidants. To make the cake even lower in calories, you can use a sugar substitute like stevia or erythritol instead of regular sugar. Serve it with a dollop of whipped cream or a sprinkle of cocoa powder for a dessert that's both low-calorie and delicious.