Place the onion and garlic into your Thermomix bowl and blitz for 3 seconds, speed 6 to grate.
Scrape down the sides of the bowl and add the olive oil and cook for 2 minutes, 100 degrees, speed 2.
Add the zucchini and carrot pieces and blitz for 4 seconds, speed 5 to grate. If there are still large pieces remaining, blitz for a further 3 seconds, speed 5 until finely grated.
Scrape down the sides of the bowl and add the mince, mixed herbs, chutney, BBQ sauce and egg to your Thermomix bowl and mix for 10 seconds, speed 4 to combine. Use your spatula to push the mince down towards the blades if needed.
Scrape down the sides of the bowl and mix for a further 10 seconds, speed 4 or until the mixture is well combined.
Divide the mixture into 8 portions and use your hands to bring them together before rolling in the flour.
Place the rissoles into a frying pan with a little olive oil and cook for approximately 3 -4 minutes on each side or until cooked through.