Preheat oven to 220 degrees celsius (or 210 degrees if using fan-forced).
Place carrot, zucchini and onion into the Thermomix bowl. Grate on Speed 9, 5 seconds, or until the mixture is finely grated (you may need to scrape down the sides of the bowl).
Place the grated vegetables into a strainer and squeeze out any excess liquid and then squeeze out any extra moisture with paper towel (see notes). Return to the Thermomix bowl.
Add the sausage mince, pork mince, garlic, grated vegetables, tomato sauce and Worcestershire sauce to the Thermomix bowl. Mix on Reverse Speed 5 for 30 seconds or until completely combined (using the spatula to help mix).
Cut one sheet of defrosted puff pastry in half.
Place 1/12th of the sausage mixture in a long thin line down the middle. Roll into a long thin roll making sure that the joined pastry seam is facing down.
Cut each roll into 3 pieces (6 pieces for bite-size). Brush lightly with the egg mixture. Sprinkle with sesame seeds or black poppy seeds.
Place the sausage rolls onto lightly greased non-stick baking trays (see notes).
Cook in the oven for 25-30 minutes or until the pastry is golden and puffed and the mixture is cooked through.