Preheat oven to 375°F (190°C)

Cook lasagna noodles according to package instructions if needed

In a large skillet cook ground beef and sausage until browned

Add chopped onion and garlic and sauté until fragrant

Stir in crushed tomatoes, tomato paste, oregano, basil, salt, and pepper

Simmer the sauce for about 10–15 minutes until slightly thickened

In a separate bowl combine ricotta cheese, egg, parmesan, parsley, garlic powder, and salt

Spread a thin layer of meat sauce in the bottom of a baking dish

Add a layer of lasagna noodles

Spread ricotta mixture over the noodles

Add meat sauce and sprinkle mozzarella cheese

Repeat the layers until ingredients are used

Finish with mozzarella and parmesan on top

Cover with foil and bake for about 25 minutes

Remove foil and bake another 10–15 minutes until cheese is bubbly and golden

Let lasagna rest for 10 minutes before slicing