Creamy Avocado Manicotti | Reader's Digest Canada

Ingredients

• 1 package manicotti shells (8 ounces)
• 1 small onion (finely chopped)
• 1 tablespoon olive oil
• 2 garlic cloves (minced)
• 1 can crushed tomatoes (28 ounces)
• 1/2 cup minced fresh basil ( or 3 tablespoons dried basil)
• 1/3 cup dry red wine or vegetable broth
• 1 tablespoon brown sugar
• 1/2 teaspoon salt
• 1/2 teaspoon pepper
• 1 container reduced-fat ricotta cheese (15 ounces)
• 1 medium ripe avocado (peeled and mashed)
• 1/2 cup grated Parmesan cheese
• 1/4 teaspoon salt
• 1/4 teaspoon pepper
• 1 cup shredded part-skim mozzarella cheese
• 1 medium ripe avocado (sliced, optional)