Chop onions and mince garlic.

Sauté onions and garlic in a little oil until softened.

Add ground beef and pork sausage to the pan.

Cook until the meat is browned and no longer pink.

Drain off any excess fat from the meat mixture.

Mash whole peeled tomatoes with a spoon or hands.

Add the mashed tomatoes, tomato paste, salt, pepper, sugar, oregano, Italian seasoning, and French's spaghetti sauce mix to the meat mixture.

Simmer gently, uncovered, until the sauce cooks down to about 1-inch thickness (approximately 2 hours).

Preheat oven to 350°F (175°C).

In a baking pan, spread a thin layer of sauce to cover the bottom.

Layer lasagna noodles over the sauce.

Spread a layer of Ricotta or cottage cheese over the noodles.

Sprinkle a generous amount of Mozzarella cheese over the Ricotta.

Repeat layers of sauce, noodles, Ricotta/cottage cheese, and Mozzarella cheese.

End with a final layer of sauce, Mozzarella cheese, and a sprinkling of Parmesan cheese.

Bake in the preheated oven for about 40 to 50 minutes, or until the lasagna is bubbly and slightly brown.

Remove from oven and let it rest for 15 to 25 minutes before serving to allow it to set.