Adjust the top oven rack to the middle position and preheat the oven to 350°F.

Prepare your chosen bread loaf pan by coating it with cooking spray.

In a large bowl or the bowl of a stand-up mixer, combine the dry ingredients: your gluten-free flour blend, baking powder, and instant yeast.

Add the wet ingredients- olive oil, honey, apple cider vinegar, and warm water to the flour mixture and mix on low for 1 minute. Then, add the egg whites and salt to the dough and mix on medium for 1 minute until the mixture resembles a thick cake batter.

After transferring the gluten-free bread dough into the greased bread pan, cover the top with Bees wax wrap or plastic wrap that has been sprayed with cooking spray. Then, place a kitchen towel over the pan and allow the bread to rise in a warm spot for 30 minutes.

Remove the towel and plastic wrap. Position the bread horizontally on the middle rack in the preheated oven for 35 minutes at 350°F until it turns golden brown. Check with a toothpick to make sure the dough is cooked through, the toothpick should come out clean.

Let the loaf cool for 10 minutes in the pan, then remove it from the pan and place it on a cooling rack. Let the bread cool thoroughly before slicing.