
Few sauces are as deeply satisfying as a slow-simmered marinara built from honest, simple ingredients — and this one delivers that classic Italian-American flavor without a single shortcut. San Marzano tomatoes bring a natural sweetness and low acidity that make the sauce taste like it's been going for hours, even after just 20 minutes on the stove. Garlic is coaxed low and slow in good olive oil until it's fragrant and just barely golden, which gives the whole pot a rich, savory backbone that store-bought jars simply can't replicate. A pinch of red pepper flakes adds gentle warmth without overwhelming the tomatoes, and a handful of torn fresh basil stirred in at the end keeps everything bright and aromatic. Because every ingredient here is naturally free of gluten — no thickeners, no fillers, no hidden additives — this is one of those recipes where eating to a dietary need feels completely effortless. Spoon it over your favorite gluten-free pasta, use it as a pizza base, or keep a jar in the fridge all week for dipping, braising, or building bigger dishes. It's the kind of foundational sauce that earns a permanent spot in your rotation.
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Heat the olive oil in a large saucepan over medium-low heat until it shimmers. Add the garlic and red pepper flakes and cook, stirring frequently, until the garlic is fragrant and just beginning to turn golden at the edges, about 2–3 minutes. Watch closely — garlic can brown quickly and will turn bitter.
Pour the canned tomatoes and their juices into the pan. Using a potato masher or fork, crush the tomatoes into rough, uneven pieces directly in the pan.
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