Preheat and prep: Heat your oven to 350°F (175°C).
Line a baking sheet with parchment paper for easy cleanup.
Combine dry ingredients: In a medium bowl, whisk 1 3/4 cups almond flour, 2 tablespoons psyllium husk powder, 2 teaspoons baking powder, and 1/2 teaspoon sea salt until evenly mixed. Break up any clumps.
Whisk wet ingredients: In a separate bowl, whisk 3 large egg whites with 1 teaspoon apple cider vinegar until frothy, about 30 seconds. You don’t need stiff peaks—just some bubbles.
Start the dough: Pour the egg white mixture into the dry ingredients and stir with a spatula until it resembles coarse crumbs.
Add boiling water: Carefully pour in 3/4 cup boiling water.
Stir immediately. The psyllium will absorb the water and the dough will thicken within 20–30 seconds into a soft, pliable mass.
Adjust and rest briefly: If the dough seems sticky, let it sit for 1–2 minutes to firm up. If it’s too stiff to shape, sprinkle in a teaspoon or two of hot water.
Shape rolls: Lightly oil your hands.
Divide the dough into 8 equal portions. Roll each into a smooth ball and place on the baking sheet. For sandwich-style, flatten slightly to about 1 to 1 1/4 inches high.
Optional toppings: Brush the tops with olive oil or melted butter.
Sprinkle with sesame seeds, poppy seeds, or everything seasoning if you like.
Bake: Bake for 20–25 minutes, until the tops are golden and the rolls feel set. They should sound slightly hollow when tapped on the bottom.
Cool: Let them cool on the sheet for 5 minutes, then transfer to a rack for another 10 minutes. This helps the interior finish setting for a better texture.
Serve: Enjoy warm with butter, use for sliders, or slice for mini sandwiches.