For the cinnamon buns, preheat the oven to 200 °C top and bottom heat. Mix the sugar and cinnamon in a powdered sugar sprinkler.
Unroll the puff pastry, sprinkle evenly with 2/3 of the sugar-cinnamon mixture, and roll up again. Cut slices about 5 mm thick from the roll, place on a baking paper, brush with soy milk and bake for about 15 minutes.
Sprinkle with the remaining sugar mixture while still hot.
Preparation Tip:
The quick cinnamon buns can be eaten warm or cold.