Preheat oven to 220°C / 200°C fan-forced

Cook pasta, in 2 batches, in a large saucepan of boiling, salted, water for 5 minutes or until just tender. Remove pasta sheets from the water with tongs or a slotted spoon and transfer to a board. Add broccoli and cauliflower to the pan. Cook in simmering water for 5 minutes or until tender. Drain. Refresh under cold water then finely chop

Combine ricotta, parmesan, garlic, onion, thyme, broccoli, cauliflower and chicken in a bowl. Season with salt and pepper

Spread 1 cup tomato passata over the base of a baking dish. Divide the cheesy chicken and vegetable mixture evenly between pasta sheets and roll up tightly to enclose the filling. Cut each roll in half horizontally. Place upright in baking dish

Top pasta rollups with remaining sauce and sprinkle with Perfect Bakes cheese. Bake, covered with foil, for 15 minutes. Uncover, bake for 15 minutes or until sauce is hot and bubbly and the cheese is golden