Marinara Sauce

Bahan-bahan (2 porsi)

• 2 tablespoons olive oil (or butter)
• 1/3 cup finely-diced white onion
• 4 cloves garlic, pressed or finely-minced
• 1/4 teaspoon crushed red pepper flakes
• 1 (28-ounce) can San Marzano whole tomatoes (with juices)
• 1 teaspoon dried oregano
• 3/4 teaspoon fine sea salt
• 1/2 teaspoon freshly-cracked black pepper
• 3 large sprigs of fresh basil