Heat olive oil in a saucepan over medium heat. Add onion and sauté until translucent, about 5 minutes. Don’t rush the caramelization; flavor loves patience.
Stir in garlic and cook until fragrant, about 30 seconds. If you hear sizzling like a mini fireworks show, you’re doing it right
Pour in the crushed tomatoes and bring to a gentle simmer. If you used whole tomatoes, break them up with the spoon as they simmer.
Add sugar, oregano, and basil. Season with salt and pepper. If you’re feeling bold, toss in red pepper flakes.
Let the sauce simmer 15–20 minutes, stirring occasionally. The flavors will mingle like old friends catching up.
Taste and adjust seasoning. If the sauce tastes too sharp, a pinch more sugar or a splash of olive oil can calm it down. Simplicity wins.
Optional finish: stir in fresh basil right at the end for a bright, peppery punch. Then serve over pasta or use as a base for other dishes.