In a large skillet, heat a drizzle of olive oil over medium heat. Sauté minced garlic and chopped onions until they become translucent, about 5 minutes. Add ground beef and Italian sausage, cooking until browned, roughly 8-10 minutes. Stir in crushed tomatoes, tomato paste, sugar, dried basil, Italian seasoning, salt, and pepper. Let it simmer for 20 minutes, allowing flavors to meld together beautifully.

While the sauce simmers, combine ricotta cheese, sour cream or cream cheese, egg, grated Parmesan, and chopped parsley in a mixing bowl. Mix until smooth and creamy. This cheesy blend will add richness and texture to your Million Dollar Italian Lasagna. Set it aside once mixed to let the flavors develop while you prepare for layering.

Preheat your oven to 350°F (175°C). In a baking dish, start layering with cooked lasagna noodles, followed by a generous layer of the meat sauce, then dollops of the cheese mixture, and a sprinkle of shredded mozzarella. Repeat this process until all ingredients are used, finishing with a top layer of mozzarella. Brush with melted butter for a golden finish, sealing in that satisfying cheesiness.

Cover the baking dish with foil and place it in the oven. Bake for 25 minutes to allow the flavors to meld. After this, carefully remove the foil and bake for an additional 20 minutes, or until the cheese on top is bubbly and golden brown. This final bake is essential for that delicious, attractive cheese layer.

Once baked, take the lasagna out of the oven and let it sit for about 10 minutes. This resting time helps the layers set, making it easier to slice. Serve up generous portions of this Million Dollar Italian Lasagna with a side of garlic bread and a fresh salad for a delightful, comforting meal everyone will love.