→ Pasta
01 - 14 ounces penne pasta
→ Sauce
02 - 2 tablespoons olive oil
03 - 4 garlic cloves, minced
04 - 1 medium onion, finely chopped
05 - 28 ounces crushed tomatoes (2 cans)
06 - 1 teaspoon sugar
07 - 1/2 teaspoon crushed red pepper flakes (optional)
08 - Salt and freshly ground black pepper, to taste
→ Cheese & Herbs
09 - 7 ounces ricotta cheese
10 - 1/2 cup fresh basil leaves, torn
11 - 2 ounces grated Parmesan cheese, plus extra for serving