Super Simple Marinara Sauce

Bahan-bahan (2 porsi)

• 1 large can (28 ounces) whole peeled tomatoes*
• 1 medium yellow onion, peeled and halved
• 2 large cloves garlic, peeled but left whole
• 2 tablespoons extra-virgin olive oil
• 1 teaspoon dried oregano
• Pinch of red pepper flakes (optional, omit if sensitive to spice)
• Salt, to taste (if necessary)
• Optional, for serving: Cooked pasta, grated Parmesan cheese or vegan Parmesan, chopped fresh basil, additional olive oil