01 - Preheat oven to 350°F. Grease a bundt pan or deep round baking dish with cooking spray or additional coconut oil.
02 - In a large bowl, combine almond flour, vanilla protein powder, baking powder, and salt. Whisk until evenly distributed.
03 - In a separate bowl, whisk Greek yogurt, eggs, almond milk, melted coconut oil, and vanilla extract until completely smooth and creamy.
04 - Pour wet ingredients into dry ingredients. Stir with a spatula until a soft, cohesive dough forms. Do not overmix.
05 - In a small bowl, mix erythritol and ground cinnamon until well combined for the coating mixture.
06 - Pinch off approximately 1-inch pieces of dough and roll into balls. Dip each ball in melted butter or coconut oil, then coat thoroughly in cinnamon mixture.
07 - Arrange coated dough balls in the prepared pan, stacking them in layers with slight spacing to allow for expansion during baking.
08 - Bake for 25-30 minutes until golden brown on top and firm to the touch. A toothpick inserted should come out clean.
09 - Allow the bread to cool in the pan for 10 minutes before inverting onto a serving plate.
10 - Whisk together plain Greek yogurt, powdered erythritol, and vanilla extract until smooth. Drizzle over the warm bread before serving.