Preheat your oven to 350°F (175°C) and gather all ingredients and equipment.

In a large mixing bowl, combine the almond flour, protein powder, cocoa powder, and baking powder.

In a separate bowl, whisk together the eggs and maple syrup until smooth.

Gradually combine wet and dry mixtures, stirring gently until no dry flour remains.

Transfer batter into a ziplock bag, snip a corner, and fill donut pan cavities about three-quarters full.

Bake for 18 minutes until donuts spring back and a toothpick comes out clean.

Let cool for about 5 minutes, then transfer to a wire rack and glaze if desired.