If your puff pastry sheets are frozen, remove one sheet from the box and allow it to thaw at room temperature in the package.
Remove the puff pastry from the package and place it on a lightly floured surface. Using a knife or a pizza wheel, cut it into 6 squares.
Take one square and position it with the pointy end facing you (see photo in post). Put one tablespoon of marinara sauce and one tablespoon of mozzarella cheese just below the center of the square.
Pull the bottom of the square up over the filling. Press it into the puff pastry to seal it. Fold the left side of the puff pastry square into the center. Smooth the edges with your finger to ensure that none of the filling leaks out when you cook them. Repeat on the other side.
Roll from the bottom of the pizza roll, pulling the filling towards you as you roll up the pizza roll. Think of it as making an egg roll. Seal the edges with your finger.
Transfer the pizza roll to a plate and put it in the fridge while you make the remaining air fryer pizza rolls. As you make each one, transfer it to the fridge to chill until all the pizza rolls are made.
Lightly grease the insert in the air fryer and preheat to 350 F (180 C) if your air fryer requires pre heating.
Finally, carefully place the vegan pizza rolls into the air fryer, leaving space between each one. Be careful not to place them too close to each other as they'll puff up and stick together. Depending on the size of your air fryer, you may need to air fry them in two batches.
Air fry for 15 minutes, carefully flipping them at the halfway mark.
Serve with a marinara dipping sauce,