Preheat your air fryer. Set it to 360°F (182°C). Lightly spray or brush the basket with oil to prevent sticking.

Mix the cinnamon sugar. In a shallow bowl, combine 1/2 cup granulated sugar with 2 teaspoons cinnamon and a small pinch of salt. Adjust cinnamon to taste.

Melt the butter. In a separate bowl, melt 3–4 tablespoons butter. Stir in vanilla if using.

Prep the dough. On a lightly floured surface, divide the dough into 6–8 pieces. Roll each piece into a thin oval or circle, about 1/8 inch thick and 6–7 inches wide. Thinner dough means crisper results.

Brush and coat. Brush one side of each dough piece with melted butter. Place the buttered side into the cinnamon sugar to coat fully. Flip, brush the other side with butter, and coat again. Press lightly so the sugar sticks.

Air fry in batches. Place 1–2 pieces in the basket without overlapping. Air fry for 4–6 minutes, flipping halfway. They should puff and turn golden with caramelized edges. Keep an eye on them—sugar can brown fast.

Finish and repeat. Transfer to a cooling rack for 1–2 minutes. As they cool, they’ll firm up and get crispier. Repeat with remaining dough.

Optional final touch. Dust with powdered sugar, drizzle with honey or chocolate, or keep them simple with extra cinnamon sugar while still warm.