Preheat your oven to 350°F (175°C) to prepare for baking.
In a large mixing bowl, combine the ground beef, Italian bread crumbs, grated Parmesan cheese, milk, chopped parsley, egg, minced garlic, dried oregano, dried basil, salt, and black pepper. Use your hands or a spoon to mix until all ingredients are well blended and the mixture is cohesive.
Place a sheet of parchment paper on a clean surface. Transfer the meat mixture onto the parchment and shape it into a rectangular slab that is approximately 1 inch thick.
Evenly spread the marinara sauce across the top of the meatloaf, leaving a small margin around the edges to prevent overflow during baking.
Sprinkle the shredded mozzarella cheese over the marinara layer. Then, distribute the chopped roasted red peppers and sliced black olives evenly across the cheese.
Starting from one of the longer edges of the shaped meat, carefully lift and roll the mixture up tightly into a log shape, ensuring the filling stays inside. Pinch the seams closed and tuck the ends to seal. Place the rolled meatloaf seam-side down in a baking dish.
For an extra burst of flavor, brush any remaining marinara sauce over the top of the meatloaf.
Bake the meatloaf in the preheated oven for 60-70 minutes, or until the internal temperature reaches 160°F (70°C), ensuring it's cooked through.
Once baked, remove the meatloaf from the oven and allow it to rest for approximately 10 minutes before slicing. This helps retain the juices and enhances the overall flavor.
Notes
Serve with additional marinara sauce and a green salad.