Get Ready to Bake! Preheat your oven to 350°F (175°C). For a loaf, lightly grease a 9x5 inch loaf pan. For rolls, line a large baking sheet with parchment paper or a silicone mat.
Mix Dry Ingredients: In a spacious bowl, whisk together the coconut flour, almond flour, psyllium husk powder, baking powder, and salt until they're well combined. If using, stir in the garlic/onion powder and dried herbs now for extra flavor!
Combine Wet Ingredients: Stir in the egg whites, oil (or melted butter), and apple cider vinegar. Next, gradually pour in the hot water, stirring constantly. Start with the smaller amount of water and add more until your dough expands to about 1.5 to 2 times its original size. Be careful not to add too much, or it might get too sticky!
Loaf Method: If you're making a loaf, gently shape the dough into a rough rectangle and carefully place it into your prepared loaf pan. Bake for 60 to 75 minutes. It's ready when the crust is beautifully browned and feels firm to the touch. Resist the urge to take it out early, even if it looks done, or it might deflate! Let it cool completely in the pan.
Roll Method: For delicious rolls, divide the dough into 10 to 12 equal portions. Roll each piece into a rough ball between your palms. If the dough feels a bit sticky, simply oil your hands lightly with a healthy oil like olive or avocado. Place them on your lined baking sheet. For flatter burger or sandwich rolls, gently press them down to about 1 inch thick.
Bake Rolls: Bake the rolls for 45 to 60 minutes, adjusting the time based on their size and how flat they are. They should be nicely browned and quite firm. Once baked, let them cool down on the baking sheet. Enjoy your freshly baked, healthy bread!