Heat the olive oil in a cooking pot over medium heat. A stainless steel or enameled pot works best because bare aluminum and uncoated cast iron can react with the tomatoes.
2 1/2 tablespoons olive oil
Add the onion. Saute for 3 to 4 minutes, or until it softens and becomes translucent.
1 piece small onion
Add the garlic. Cook for about 30 seconds while stirring. Keep an eye on it because browned garlic can make the sauce taste bitter.
1 tablespoon garlic
Pour in the crushed tomatoes and tomato sauce. Stir and let the mixture come to a gentle boil.
28 ounces crushed tomatoes, 1 cup plain tomato sauce
Add the oregano, crushed red pepper flakes, bay leaf, salt, and ground black pepper. If you are using dried basil, add it at this point as well.
1 teaspoon dried oregano, 1/4 teaspoon crushed red pepper flakes, 1 piece dried bay leaf, 1/2 teaspoon salt, 1/4 teaspoon ground black pepper
Reduce the heat to low. Simmer the sauce uncovered for 20 to 25 minutes, stirring occasionally, until it thickens to your preferred consistency.
Taste the sauce. Add the sugar only if the tomatoes taste too sharp or acidic. Add more salt as needed.
1/2 teaspoon granulated sugar
Turn off the heat and remove the bay leaf. Stir in the fresh basil.
2 tablespoons fresh basil
Serve with pasta or use it in your favorite recipe. Sprinkle grated Parmesan cheese on top when serving, if desired. Share and enjoy!
grated Parmesan cheese