Ingredients

  • 24 uncooked jumbo pasta shells
  • 1 tablespoon olive oil
  • 1 medium zucchini, shredded and squeezed dry
  • 1/2 pound baby portobello mushrooms, chopped
  • 1 medium onion, finely chopped
  • 2 cups reduced-fat ricotta cheese
  • 1/2 cup shredded part-skim mozzarella cheese
  • 1/2 cup shredded provolone cheese
  • 1/2 cup grated Romano cheese
  • 1 large egg, lightly beaten
  • 1 teaspoon Italian seasoning
  • 1/2 teaspoon crushed red pepper flakes
  • 1 jar (24 ounces) meatless spaghetti sauce
  • 1/4 cup grated Parmesan cheese

Method

  • Preheat oven to 350°. Cook shells according to package directions for al dente; drain and rinse in cold water.
  • In a large skillet, heat oil over medium-high heat. Add vegetables; cook and stir until tender. Remove from heat. In a bowl, combine ricotta, mozzarella, provolone and Romano cheeses; stir in egg, seasonings and vegetables.
  • Spread 1 cup sauce into a 13x9-in. baking dish coated with cooking spray. Fill pasta shells with cheese mixture; place in baking dish. Top with remaining sauce. Sprinkle with Parmesan cheese.
  • Bake, covered, 40 minutes. Bake, uncovered, 10 minutes longer or until cheese is melted. Let stand 10 minutes before serving.
  • Cool unbaked casserole; cover and freeze. To use, partially thaw in refrigerator overnight. Remove from refrigerator 30 minutes before baking. Preheat oven to 350°. Cover casserole with foil; bake 50 minutes. Uncover; bake 15-20 minutes longer or until heated through and a thermometer inserted in center reads 165°.