Preheat oven to 230 degrees celsius (fan-forced) and lightly grease two baking trays.
Remove the puff pastry from the freezer and set aside to thaw slightly.
Place the garlic and brown onion (which has been halved)into the Thermomix bowl. Mix for 3 seconds, speed 7 to grate.
Scrape down the sides of the bowl and add the zucchini and carrot which has been cut into 3cm pieces. Mix for 5 seconds, speed 7 to grate. Increase the time for smaller pieces.
Add the chicken mince, salt and pepper, sweet chilli sauce and soy sauce. Mix for 15 seconds, speed 4 to combine.
Remove plastic from pastry sheet and cut in half with a sharp knife and brush long edges of pastry with egg.
Slice the pastry in half and add ⅛ of the mixture to the centre of each piece.
Carefully roll the pastry over the top of mince mixture to fully enclose it. Cut sausage rolls into desired lengths (I usually cut into six pieces).
Carefully roll the pastry over the top of mince mixture to fully enclose it. Cut sausage rolls into desired lengths (I usually cut each roll into three pieces).
Place onto the prepared baking trays and brush with the egg and sprinkle with sesame seeds - if using.
Place in oven and bake for 30 - 35 minutes or until pastry is crisp, golden and the sausage rolls are cooked through.