Preheat the oven: Preheat the oven to 180°C / 160°C fan / 350°F.
Sauté the aromatics: Heat the olive oil in a large oven-safe frying pan over medium heat. Add the shallots and cook until softened. Add the garlic, thyme and Italian herbs and cook until fragrant.
Make the tomato sauce: Pour in the passata, season with salt and pepper and bring to a gentle simmer.
Make it creamy: Stir in the double cream, lemon juice and cinnamon until completely combined.
Add the tortellini: Add the uncooked fresh tortellini straight from the packet and stir until well coated in the sauce.
Add the parmesan: Stir through half of the parmesan. If using spinach or kale, add it now and allow it to begin to wilt.
Add the cheese: Scatter the mozzarella and remaining parmesan evenly over the top.
Bake: Transfer to the oven and bake for about 20 minutes, until the tortellini is tender and the cheese is melted, bubbling and golden. Serve hot.