Preheat oven to 350 F, and grease or line a baking sheet with parchment paper.
In a large mixing bowl combine: ½ cup almond flour, ⅓ cup coconut flour, 3 ½ tablespoon psyllium husk powder, 2 ½ teaspoon baking powder, 2 teaspoon granular sweetener of choice, and sea salt. Mix together thoroughly. Set aside.
In a second large mixing bowl combine: 6 egg whites, 2 tablespoon melted butter, and1 ½ tablespoon apple cider vinegar. Mix together thoroughly.
pour the egg mixture into the dry flour mixture and stir together well until dough forms.
Pour the ⅓ hot water over the dough and stir into the dough until dough forms again.
Form dough into 9 rounded mounds with your hands, and place onto baking sheet.
Brush the tops lightly with melted butter.
Bake for 40 to 50 minutes. Remove from oven.
Can sprinkle the tops with optional cheese if desired.
Serve and enjoy! If rolls are still doughy in the center, then return to oven for a few minutes, or can microwave for 25 seconds.