Mix all the dough ingredients until a dough forms. Chill for 5–10 minutes.
Mix the ground almonds with the egg white and brown sugar.
Roll the dough into a rectangle, spread the filling evenly, cut into long strips, then roll each strip into a swirl.
Brush with egg yolk and sprinkle with sliced almonds.
Air fry at 260°F (125°C) for 20 minutes, then increase to 330°F (165°C) for 3–5 more minutes, until golden. Let cool slightly.
