Heat oil: Warm olive oil in a saucepan over medium heat.
Sauté garlic: Add garlic and cook for 30 seconds until fragrant.
Add tomatoes: Stir in diced tomatoes and tomato paste until blended.
Season: Mix in sugar, salt, pepper, basil, oregano, and red chili flakes.
Simmer: Lower the heat and simmer for 12 minutes until thickened.
Vinegar finish: Stir in balsamic vinegar for added depth.
Optional blending: For a smoother texture, blend the sauce carefully.
Cool and use: Let cool and spread on your pizza or refrigerate for up to five days.