Comforting Baked Spaghetti

Ingredients

• 12 oz (340 g) spaghetti (or your preferred pasta shape)
• Salt (for pasta water)
• 1 tablespoon olive oil
• 1 onion, finely chopped
• 2 garlic cloves, minced
• 1 lb (450 g) ground Italian sausage or beef (optional)
• 28 oz (800 g) canned crushed tomatoes
• 1 teaspoon dried basil
• 1 teaspoon dried oregano
• Salt and pepper, to taste
• 2 cups (200 g) shredded mozzarella cheese
• 1 cup (100 g) grated Parmesan cheese
• 1 large egg
• 1 cup (240 g) ricotta cheese
• Fresh basil, for garnish (optional)