01 - Preheat oven to 350°F. Line an 8x4 inch loaf pan with parchment paper.
02 - Whisk Greek yogurt and eggs in a medium bowl until fully combined and slightly frothy.
03 - Sift together coconut flour, baking powder, and salt in a separate small bowl.
04 - Add dry ingredients to wet mixture. Mix thoroughly until smooth. Let batter rest for 2-3 minutes to allow coconut flour to absorb moisture.
05 - If using, stir in apple cider vinegar for extra fluffiness.
06 - Pour batter into prepared loaf pan. Smooth top with spatula. Sprinkle with seeds if desired.
07 - Bake for 30-35 minutes until golden and a toothpick inserted into the center comes out clean.
08 - Let cool completely in pan. Remove and slice. Serve as desired.