Incredible! I never expected this to be so amazing with just a few ingredients!

1. In a large saucepan, heat the olive oil over medium heat. Add the chopped onion and sauté until translucent, about 5 minutes.

2. Stir in the minced garlic and cook for another minute until fragrant.

3. Add the chopped tomatoes to the pan, stirring well to combine with the onion and garlic.

4. Bring the mixture to a gentle simmer, then add the chopped basil, sugar, salt, black pepper, oregano, and red pepper flakes if using.

5. Reduce the heat to low and let the sauce simmer gently for about 30-40 minutes, stirring occasionally, until it thickens to your desired consistency.

6. Taste and adjust seasoning if necessary. Remove from heat and let cool slightly before transferring to a mason jar or serving immediately over pasta.

For a richer sauce, you can add a splash of red wine during the simmering process. If you prefer a smoother sauce, use an immersion blender to puree the mixture to your liking. For a heartier version, consider adding cooked ground beef or Italian sausage. You can also experiment with different herbs, such as thyme or rosemary, to add a unique twist to the classic flavor.