In a large bowl add the ground beef, Italian sausage, garlic, parsley, parmesan cheese, salt, pepper, bread crumbs, eggs, and milk and mix until thoroughly combined.
3. Step
Roll the mixture into 5 ounce meatballs.
4. Step
Add 1 tablespoon of olive oil to a pan over medium heat and brown the meatballs on both sides for 15 minutes total.
5. Step
Slice the rolls in half lengthwise.
6. Step
Place the bottom half on a 9 x 13-inch (23 x 33cm) baking dish.
7. Step
Spoon a little marinara sauce on each bun. Top a meatball on each roll, add another spoonful of sauce, and top with mozzarella cheese.
8. Step
Place the remaining half of the rolls on top and lightly brush them with oil.
9. Step
Combine the parmesan cheese and the Italian seasoning in a small bowl and sprinkle it over the buns.
