Preheat your oven to 210 degrees celsius (fan-forced) and line two trays with baking paper.
Remove the puff pastry from the freezer and set aside to thaw slightly and lightly whisk egg in a small bowl or mug - set aside.
Place the tasty cheese and parmesan cheese (which has been cut into 2cm pieces) into your Thermomix bowl and blitz for 10 seconds on speed 9 or until finely grated. Set aside in a separate bowl until needed.
Add the carrot and zucchini which has been cut into 3cm pieces TM into your Thermomix Bowl and mix for 5 seconds on speed 6. If you want a finer consistency, blitz for a further 2 – 3 seconds on speed 6.
Add the chicken mince, grated cheeses, 1 egg, corn kernels, mixed herbs, onion flakes and salt and pepper to your Thermomix bowl and mix on Reverse Speed 5 for 15 seconds or until completely combined.
Cut one sheet of the defrosted puff pastry in half and lightly brush the egg mixture down one long side of each pastry half.
Scoop the mince mixture and position in the middle of the pastry sheet
Carefully roll the pastry over the top of mince mixture to fully enclose it. Cut the chicken and cheese sausage rolls into four pieces.
Brush the tops with a little of the beaten egg and sprinkle with poppy seeds (optional) and place on a tray lined with baking paper.
Place in oven and bake for 25 – 30 minutes or until pastry is crisp, golden and the chicken and cheese sausage rolls are cooked through.