Cheesy Baked Ziti with Ricotta: A Family Fave!

Ingredients

• 2 tablespoons olive oil (30 ml)
• 1 medium yellow onion, finely chopped (about 1 cup)
• 2 cloves garlic, minced
• 1 (28 ounce/794g) can crushed tomatoes
• 1 (15 ounce/425g) can tomato sauce
• 1 teaspoon dried oregano
• 1/2 teaspoon dried basil
• 1/4 teaspoon red pepper flakes (optional, for a little kick)
• 1 teaspoon sugar (to balance acidity)
• Salt and freshly ground black pepper to taste
• 1 (15 ounce/425g) container whole milk ricotta cheese
• 1 large egg, lightly beaten
• 1/4 cup grated Parmesan cheese
• 1/4 cup chopped fresh parsley
• 1 pound (454g) ziti pasta
• 8 ounces (227g) mozzarella cheese, shredded (about 2 cups)
• Additional grated Parmesan cheese, for topping (optional)