Preheat oven to 400 F. In a small bowl. Add ricotta cheese and the parsley and a tiny pinch of salt for taste. In another bowl add Parmesan cheese and mozzarella. Mix to combine.
In a skillet over medium high heat with oil, saute the onions until translucent, about 2 minutes. Add the garlic. Cook until fragrant about 10-15 seconds.
Add the ground beef. Cook until browned. Drain. Add all of the sauce ingredients to the skillet. Mix to combine. Season to taste more if you like. Alternatively, you can use your favorite marinara sauce
In a small bowl combine the Ricotta cheese and parsley.
Season with a pinch of salt.
Add all of the ravioli sauce ingredients to the skillet and mix until completely combined with the beef.
In a greased 9x13 baking dish create the following layers:First layer - Add the ravioli to a lightly greased baking dish.Second layer - Add the beef tomato sauce.Third layer -top with shredded cheese.Repeat layers - Top with ricotta cheese then end with remaining cheese.
Cover and bake for 30-40 minutes. To get the cheese bubbling, remove the foil and bake for 10-15 minutes. *See notes*