Yes. Tomato sauce freezes well for 4-6 months at best quality, and it thaws with almost no change in flavor or texture.
Batch-cooking tomato sauce on a Sunday only makes sense if the freezer treats it kindly, and luckily it does — the acidity and low water-to-solids ratio in a cooked sauce make it one of the more freezer-stable foods in the kitchen. Fresh salsas and watery purées don't get the same easy pass.
The main decisions are about packaging: what you freeze it in determines how fast it thaws and how much freezer space it eats up.
Cool the sauce fully before sealing it up — sauce that goes in warm creates condensation that leads to ice crystals. Flat freezer bags laid on a tray until solid are the most space-efficient option; once frozen they stack like books. Rigid containers or wide-mouth jars work too, but leave about an inch of headspace since liquid expands as it freezes.
Tomato sauce stays safe indefinitely at 0°F (-18°C), but for best flavor use it within 4-6 months. Sauce with a lot of oil or cream added tends to separate a bit sooner than a straightforward tomato-and-herb base.
Thaw overnight in the fridge, or reheat frozen sauce directly on the stove over low-medium heat, stirring occasionally. If it looks thick or slightly split after freezing, a splash of water or broth and a good stir brings it right back together.
Tomato sauce is about as freezer-friendly as food gets — portion it before it goes in, and you'll have dinner shortcuts for months. Just leave room for expansion and thaw only what you plan to eat.
It stays safe indefinitely at 0°F, but tastes best used within 4-6 months. After that it's still edible, just less vibrant.
Yes, in straight-sided wide-mouth jars with about an inch of headspace. Tapered jars can crack as the sauce expands.
The flavor mellows very slightly, but most people can't tell the difference once it's reheated with a stir.
Yes, meat sauce freezes just as well as plain sauce and holds for about the same 4-6 month quality window.