Preheat your oven to 350 degrees Fahrenheit.
Grease a deep 9×13 baking dish with cooking spray and set aside.
In a medium bowl, add the ricotta, beaten egg, Parmesan cheese, garlic powder, and Italian seasoning. Stir to combine then set aside.
475 grams ricotta cheese, 1 large egg, ¼ cup Parmesan, 1 teaspoon garlic powder, ½ teaspoon Italian seasoning
In a large skillet over medium heat, add the ground beef, ground sausage and onions. Cook until the meat has browned and the onion is soft, about 15 minutes, then drain the fat.
1 pound ground Italian sausage, 1 cup white onion
Stir in the garlic and sauté for 1-2 minutes until the garlic is browned and fragrant.
1 tablespoon minced garlic
Stir in the four cheese sauce. Reduce the heat to low and simmer the mixture for 2-3 minutes, then turn off the heat.
2 650 ml jars four cheese pasta sauce
Spread ¼ of the meat sauce into the bottom of the prepared pan.
Top with a single layer of ravioli (15 total).
30 large spinach ravioli
Place another ¼ of the meat sauce on top of the ravioli.
Spread out the ricotta cheese mixture on top of the meat sauce.
Top with 1 cup shredded mozzarella.
3 cups shredded mozzarella cheese
Place another ¼ of the meat sauce on top, followed by another layer of ravioli.
Place the last of the meat sauce on top then top with the remaining 2 cups mozzarella.
Cover the pan loosely with aluminum foil and bake for 60 minutes. Remove the foil and continue to bake until golden and bubbly, around 15 minutes.
Remove and let stand for 15 minutes.
Top with the fresh basil to serve.
¼ cup fresh basil