2 tbsp olive oil
* 1 lb ground beef
* ½ lb Italian sausage (sweet or hot), casings removed
* 1 small onion, diced
* 3 cloves garlic, minced
* 1 (28-ounce) can crushed tomatoes
* 2 (15-ounce) cans tomato sauce
* 2 tbsp tomato paste
* 2 tsp Italian seasoning
* 1 tsp dried basil
* Salt and black pepper to taste
Cheese Filling
* 15 oz whole-milk ricotta cheese
* 1 large egg
* ½ cup grated Parmesan cheese
* 2 tbsp chopped fresh parsley (or 1 tbsp dried)
* ½ tsp salt
* ¼ tsp black pepper

Make the sauce: Brown the beef and sausage. Add onion and cook until soft, then stir in the garlic for 30 seconds. Add tomatoes, tomato sauce, tomato paste, and seasonings. Simmer 30–45 minutes.
2. Prepare the cheese mixture: Mix the ricotta, egg, Parmesan, parsley, salt, and pepper until smooth.
3. Assemble:
* Spread a thin layer of sauce in a 9×13-inch baking dish.
* Add 3 noodles.
* Spread one-third of the ricotta mixture.
* Sprinkle with mozzarella.
* Spoon on meat sauce.
* Repeat for three layers.
* Finish with sauce, the remaining mozzarella, and Parmesan.
4. Bake: Cover with foil and bake at 375°F (190°C) for 45 minutes. Remove the foil and bake another 15–20 minutes, until bubbly and golden.
5. Rest: Let the lasagna stand for 15–20 minutes before cutting. This