Preheat the oven to 375°F. Prepare a large baking sheet with parchment paper.

Place the egg whites, 3 whole eggs, milk, apple cider vinegar, and coconut oil into a bowl, and whisk together.

In a separate bowl, sift together the almond flour, coconut flour, psyllium husk, baking powder, baking soda, and salt.

Fold the dry ingredients into the wet using a spatula.

Add ¼ cup of boiling water, and mix together. Keep mixing the ingredients until the water’s absorbed. At first, it will be very wet, but it will get absorbed as you mix.

Next, divide the batter into 8 even balls. The batter will be slightly loose. Roll each ball out into a log by rolling gently with your fingers. Keep your hands wet during this process to keep the batter together.

Transfer the logs to the prepared baking sheet. Pinch the ends together, and gently flatten the dough with your hands into a bagel shape.

In a small ramekin, whisk together 1 whole egg with water. Brush the egg wash over each bagel, then sprinkle them with poppy seeds. Bake for 20–25 minutes or until golden brown. Remove from the oven and let the bagels rest on the baking sheet for 10 minutes before serving.