1 cup (4 ounces) shredded part-skim mozzarella cheese
1/3 cup grated Parmesan cheese
1 tablespoon chopped fresh parsley
1/4 teaspoon pepper
1 (10-ounce) package frozen chopped spinach, thawed and drained
1 large egg, lightly beaten
1 large egg white
Olive oil-flavored cooking spray
2 1/2 cups marinara sauce
How to Make It
Preheat oven to 350°.
Cook pasta according to package directions, omitting salt and fat. Drain and rinse.
Combine ricotta cheese and next 7 ingredients in a medium bowl, stirring well. Spoon mixture evenly into pasta shells. Place shells in an 11- x 7-inch baking dish coated with cooking spray. Spoon marinara sauce evenly over shells. Bake, covered, at 350° for 20 minutes or until thoroughly heated.