1. Clean the ingredients, dice the tomatoes, slice the mushrooms, dice the onions, dice the cheese, and chop the garlic; put enough water in the pot and boil it, then add the pasta, turn to the middle of the fire, add a little salt and cook for 8-10 minutes until the pasta is mature, remove it and put it in the baking bowl for standby;
2. Chop the pork tenderloin, add 1 egg yolk, salt, pepper and some dried meal, stir until it is thick and strong, put the water in the pot and boil it, knead the pork stuffing into meatballs by hand, put them into the water, boil them in small heat, and then fish them out for use;
3. Heat the oil in the pot, stir fry the onion first, then add the tomato, stir fry it soft, then add the mushroom slices together with the tomato, and add more ketchup and a little sugar at the same time;
4. Add 1 large bowl of water to thicken the tomato sauce, put in the basil leaves, then pour the cooked meatballs together, mix in salt, black pepper, and a little sugar to taste;
5. Take out the cooked pasta and put it on the baking bowl, evenly spread a layer of tomato sauce and meatball sauce on the top layer, sprinkle a layer of cheese on the top layer, bake it at 200 ℃ in the middle layer of the oven for 5-10 minutes before the cheese dissolves.