Creating the Meatball and Mozzarella Bake is simple if you follow these steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C) and grease a baking dish with olive oil.
2. Make the Meatballs: In a large bowl, combine ground beef, breadcrumbs, Parmesan cheese, parsley, egg, garlic, salt, and pepper. Mix until well combined.
3. Form Meatballs: Roll the mixture into 1- to 1.5-inch meatballs and place them in the greased baking dish.
4. Brown the Meatballs: In a skillet over medium heat, brown the meatballs on all sides for about 5-7 minutes. This adds flavor but is optional.
5. Add Sauce: Pour the marinara sauce over the browned meatballs, ensuring they are well coated.
6. Add Cheese: Sprinkle the shredded mozzarella cheese evenly over the top of the meatballs and sauce.
7. Bake: Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the cheese is bubbly and golden.
8. Cool: Remove from the oven and let it cool for about 10-15 minutes before serving.
9. Garnish: If desired, sprinkle additional parsley or crushed red pepper flakes for a pop of color and flavor.

These steps will guide you in making this incredible Meatball and Mozzarella Bake effortlessly.