Mix together the ground beef, Italian breadcrumbs, Parmesan, egg, oregano, basil, onion powder, garlic powder, salt, and pepper. Roll the mixture into balls.
1
Brown the meatballs on all sides and drain the grease. Add the marinara sauce and simmer.
2
Meanwhile, split, butter, and toast the sub rolls under the broiler.
3
Assemble the sandwiches and broil. Optionally sprinkle with Parmesan and chopped parsley, then serve.
4