01 - Preheat oven to 350°F. Grease a bundt pan or deep round baking dish thoroughly with butter or cooking spray.
02 - In a large mixing bowl, combine almond flour, vanilla 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 completely smooth and well combined.
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 sweetener and ground cinnamon until thoroughly combined.
06 - Pinch off small pieces of dough, approximately 1 inch in diameter. Roll each piece between your palms to form smooth balls.
07 - Dip each dough ball into melted butter or coconut oil, ensuring complete coverage. Immediately roll in the cinnamon-sweetener mixture until evenly coated.
08 - Arrange coated dough balls in the prepared bundt pan or baking dish, stacking them in layers and leaving slight space between pieces for expansion during baking.
09 - Bake for 25-30 minutes until golden brown on top and set in the center. A toothpick inserted should come out clean.
10 - Let the bread cool in the pan for 10 minutes. Meanwhile, whisk together Greek yogurt, powdered erythritol, and vanilla extract until smooth for the optional glaze.
11 - Drizzle the glaze over warm bread before serving. Invert onto a serving plate if using a bundt pan.