Cook the tortelloni in boiling salted water for 8-10 minutes. Clean the broccoli, cut into florets from the stalk and wash. Peel onion and garlic and cut into fine cubes. Heat the oil in a pot and fry the onion and garlic until transparent.
Add the chopped tomatoes, bring to the boil and season with salt, pepper and honey. In the meantime add broccoli florets to the tortelloni in the cooking water for the last 2 minutes and cook along with the tortelloni. Drain the pasta, collecting about 100 ml of pasta water.
Put the pasta back in the pot. Mix the tomato sauce and pasta water, mix with the pasta. Pour into a greased casserole dish. Coarsely grate the cheese and spread it on the noodles. Gratinate in a preheated oven (electric cooker: 225 °C/ convection oven: 200 °C/ gas: level 4) for approx. 10 minutes.