Meatball Boats

For the Tomato Sauce:

• 2 tablespoons olive oil
• 1 onion, finely chopped
• 2 cloves garlic, minced
• 1 can (28 ounces) crushed tomatoes
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• Salt and pepper to taste
• 1 tablespoon sugar (optional, to balance acidity)

For the Bread Boats:

• 4 large sub rolls or baguettes, halved and hollowed
• 2 tablespoons melted butter
• 1/2 teaspoon garlic powder
• 1/4 cup grated Parmesan cheese