Cook the Meat Sauce: Brown the beef and sausage in a skillet. Add onions and garlic to the pan.
Stir in tomatoes and paste. Let it simmer for a long time.
Boil the Noodles: Fill a large pot with salty water. Cook the noodles until they are soft.
Drain them well in a colander. Lay them flat so they do not stick.
Mix the Cheese: Put ricotta in a medium bowl. Add eggs and some chopped parsley.
Stir in the grated parmesan cheese. Mix it until it looks very smooth.
Start First Layer: Spread some meat sauce in the baking dish.
Place a layer of noodles on top. Make sure they cover the sauce completely.
Add Cheese Layer: Spread half of the ricotta mixture on noodles. Sprinkle a lot of mozzarella cheese over it. Add more meat sauce on top of cheese.
Repeat the Layers: Add another layer of pasta. Repeat the cheese and sauce steps again. End with a thick layer of mozzarella.
Bake the Dish: Cover the dish with silver foil. Bake it in a hot oven. Remove the foil for the last few minutes. Let the cheese turn golden brown.