Heat olive oil in a saucepan over medium heat. Add chopped onion and cook until translucent, about 5 minutes.

Add minced garlic and cook for another minute until fragrant.

Stir in crushed tomatoes, dried oregano, dried basil, salt, and pepper.

Bring the sauce to a simmer and cook for 15-20 minutes, stirring occasionally, until thickened.

Taste and adjust seasoning if needed. Use as a pasta sauce, pizza sauce, or dipping sauce for breadsticks.