01 - Preheat oven to 350°F. Grease a bundt pan or deep round baking dish thoroughly to prevent sticking.
02 - In a large mixing bowl, whisk together almond flour, protein powder, baking powder, and salt until evenly distributed.
03 - In a separate bowl, whisk Greek yogurt, eggs, almond milk, melted coconut oil, and vanilla extract until smooth and well blended.
04 - Pour wet ingredients into dry ingredients. Stir thoroughly until a soft, cohesive dough forms.
05 - In a small bowl, combine erythritol sweetener and ground cinnamon. Mix until uniform.
06 - Pinch off approximately 1-inch pieces of dough and roll into balls. Dip each ball in melted butter or coconut oil, then coat evenly in cinnamon mixture.
07 - Layer coated dough balls in the prepared pan, leaving space between pieces for expansion during baking.
08 - Bake for 25 to 30 minutes until golden brown and set throughout. A toothpick inserted should come out clean.
09 - Allow to cool in the pan for 10 minutes before removing.
10 - Whisk together Greek yogurt, powdered erythritol, and vanilla extract until smooth. Drizzle over warm bread before serving.