Preheat your oven to 375°F (190°C).
In a bowl, combine ground beef, breadcrumbs, egg, garlic powder, onion powder, salt, and pepper. Mix until well blended and form into small meatballs.
In a large skillet over medium heat, brown the meatballs on all sides until fully cooked, then remove from skillet.
In a baking dish, layer the ravioli and cooked meatballs. Pour marinara sauce over the top, ensuring everything is covered with sauce.
Sprinkle shredded mozzarella and grated parmesan cheese over the top.
Cover the baking dish with foil and bake in the preheated oven for 20 minutes.
Remove the foil and bake for an additional 10 minutes, or until the cheese is bubbly and golden.
Let it cool slightly before serving. Enjoy!