01 - Preheat oven to 350°F. Grease a bundt pan or deep round baking dish thoroughly with cooking spray or oil.
02 - In a large mixing bowl, combine almond flour, vanilla whey protein powder, baking powder, and salt. Whisk together until evenly distributed.
03 - In a separate bowl, whisk Greek yogurt, eggs, almond milk, melted coconut oil, and vanilla extract until smooth and well combined.
04 - Pour wet ingredients into dry ingredients. Stir with a spatula or wooden spoon until a soft, cohesive dough forms. Avoid overmixing.
05 - In a small bowl, mix granular erythritol or monkfruit sweetener with ground cinnamon until thoroughly blended.
06 - Pinch off small portions of dough (about 1 inch). Roll each piece into a ball. Dip each ball in melted butter or coconut oil, then coat evenly in the cinnamon-sweetener mixture.
07 - Place coated dough balls in the prepared pan in layers, leaving some space between pieces for expansion during baking.
08 - Bake for 25-30 minutes until golden brown and set. A toothpick inserted should come out clean.
09 - Allow the bread to cool in the pan for 10 minutes before removing or adding glaze.
10 - In a small bowl, whisk plain Greek yogurt, powdered erythritol, and vanilla extract until smooth and drizzle over warm bread before serving.