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. 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. Using a pastry brush, lightly brush the egg mixture down one long side of each pastry half.
Place 1/12th of the sausage mixture in a long thin line down the opposite side. Roll into a long thin roll making sure that the joined pastry seam is facing down.
Cut each roll into 3 pieces. Brush lightly with the egg mixture. Sprinkle with sesame seeds or black poppy seeds.
Place the sausage rolls onto non-stick baking trays (see note).
Cook in the oven for 25-30 minutes or until the pastry is golden and puffed and the mixture is cooked through.