Extra Cheesy Tortellini Bake

one-20 ounce package (1 pound 4 ounces) three-cheese tortellini (spinach, sausage, etc. tortellini may be substituted), cooked according to package directions

(about 3 ounces) mascarpone cheese, softened to room temp

red pasta sauce (I used a basil-infused sauce)

(about 1/2 cup) parmesan cheese, finely grated

(about 2 cups) mozzarella cheese, finely grated

fresh Italian flat-left parsley or fresh basil, finely minced for garnishing, optional