Preheat oven to 400 degrees F.
For meatballs, in a large bowl mix together all ingredients (including the beef), except the canola oil, tomato sauce and mozzarella, until well combined. Using wet hands, form walnut-size pieces into balls. Heat the oil in a medium skillet over medium-high heat and fry the meatballs until browned on all sides.
Slice the rolls in half lengthwise and put on a baking sheet. Top each half with 1/4 cup of the tomato sauce, 4 meatballs and some mozzarella cheese. Put in the oven and bake for 10 minutes or until the cheese is melted. Transfer to a serving platter and serve.
Chunky Tomato Sauce:
In a medium pot, add the oil and heat over medium heat. Add the onion and garlic and saute for 3 minutes. Add the remaining ingredients and simmer for another 15 minutes.
Divide the ground beef and reserve 1/2 pound for the Round 2 Recipe, Meatball Subs. Shape into 4 patties and season with salt and pepper. Place in a skillet that has been sprayed with nonstick cooking spray over medium-high and cook patties 3 minutes on each side. In the last minute of cooking, top the meat patties with cheese so it will melt.
In a small bowl, mix together the ketchup, sour cream and mayonnaise and spread half onto the hamburger buns and reserve the leftover for a dipping sauce for the French Fries. Place the burgers on buns and top with lettuce and pickles.