Preheat oven to 180 degrees C (350 degrees F). Remove pastry from freezer and allow to defrost on bench covered with a damp cloth
Add onion to the food processor and pulse to chop. Add to a large bowl. Add chickpeas, carrot and parsley to the processor now and process until finely chopped. Add to the bowl along with the onion.
Also add the dried herbs and 1 egg. In a separate bowl add the bread and pour some milk over and allow to absorb. Squeeze as much liquid out as possible and also add to the mixture.
Using your hands, mix until well combined. Crumble the feta into the mixture and stir to combine. Small chunks of feta are good.
To assemble the veggie sausage rolls:
Cut a puff pastry sheet in half. Add the chickpea mixture along the long edge (you can make them as big or as little as you like). Add a little water along the edge and roll the pastry over to seal.
Cut into 5 rolls and add to a lined baking tray. Continue with the remaining mixture and pastry.
Brush the rolls with the remaining egg (lightly beaten) and sprinkle with sesame seeds.Bake for 35 minutes or until golden brown. Serve warm with tomato sauce or chutney.