Meatball Crostini

Name: Meatball Crostini
Ingredients: 1 stick unsalted butter, at room temperature; 2 teaspoons minced garlic; 2 teaspoons finely chopped fresh oregano leaves (or 1 teaspoon dried); 1 teaspoon finely chopped fresh rosemary leaves; 1 tablespoon finely chopped fresh basil leaves; Salt and freshly ground black pepper; 1 loaf French baguette; 1 (26-ounce) jar tomato basil pasta sauce; 1 (16-ounce) block mozzarella cheese, sliced thin; 1 (16-ounce) bag frozen, fully cooked meatballs, defrosted and sliced 1/4-inch thick; Parmesan, for garnish