Step 1

Put an oven rack in the lower third position. Preheat the oven to 350°F. Line a rimmed baking sheet with parchment paper or a silicone baking mat.

Step 2

In a large bowl, mix the almond flour, psyllium husk powder, nutritional yeast, baking powder, and salt until there are no visible clumps.

Step 3

Add the egg whites and vinegar to the bowl and, using a rubber spatula, mix while slowly pouring in the hot water. Continue to mix just until the ingredients are well combined; be careful not to overmix the dough.

Step 4

Moisten your hands and divide the dough into 4 equal parts, then shape them into hamburger-sized buns. Put the buns on the lined baking sheet. Sprinkle the bagel seasoning over the tops of the buns.

Step 5

Bake for 50 minutes to 1 hour, until the buns have doubled in size, are crisp on top, and make a hollow sound when you thump them. Allow to cool before slicing.