This throw it all in and forget it recipe for a rich and intense fat free slow cooker marinara or tomato sauce will become a freezer staple. Perfect for pizzas or pasta, it’s a simple slow cooker recipe that delivers scrumptious results every time. Gluten free and vegan.
I’m a big fan of preparing ahead and freezing, finding that for meals during the week having something prepared earlier sitting in the freezer really cuts down on my stress levels and lets me make a healthy and tasty dish in no time at all. This slow cooker fat free tomato sauce is a perfect example, and has so many uses.
This tomato sauce is frugal, rich and intense and will become your favourite tomato or marinara sauce in no time. Best of all the preparation is almost completely hands off – you need to do a little chopping then chuck everything into your slow cooker, pop the lid on and leave overnight.
Long slow cooking will reduce the canned tomatoes to a rich and intense sauce. To intensify the flavour even more leave the lid of the slow cooker ajar for the last hour of cooking time. One huge advantage of making a recipe like this in the slow cooker is that it really does not matter if you leave it coking for an extra hour or two.
If you are going to use the sauce for pizza and pasta, you could add an extra pinch of pizza seasoning for a stronger herby punch.
How do I make Fat Free Slow Cooker Tomato Sauce?
This is a very straightforward and easy recipe. There’s no no need to spend time spent frying onions or anything like that: simply place all the ingredients in a slow cooker and switch it on the low setting. Eight hours later, blitz the sauce with a stick blender and it’s all done. Use there and then, or let it cool and freeze it for later.
Can I Make This Slow Cooker Tomato Sauce Without A Slow Cooker?
Easily! Use a heavy casserole dish with a lid, and cook the sauce for a couple of hours on the lowest setting on your stove top. You may need to use a diffuser plate under the pot depending how how much control you have over the burners, and give the pot a stir from time to time.
Can I Freeze Fat Free Slow Cooker Tomato Sauce?
Yes, absolutely! What I like to do is to freeze it in an ice cube tray, then transfer the frozen cubes into a plastic bag. That way it’ll keep in the freezer for a few months, and it’s so easy to pull a couple of cubes out, let them defrost and stir into some pasta for a fuss free meal.
What Can I do with Fat Free Slow Cooker Tomato Sauce
I use this sauce as is on pasta and home-made pizza, but it’s easy to add some variation. Here are a few ideas:
- Fry some mince until browned, add the tomato sauce and let it heat through. Spag bol in minutes!
- Cook some spicy sausages, add tomato sauce and serve with delicious buttery mashed potatoes.
- Add a cube to stews for a hint of rich tomato flavours.
- Add to soups or risottos
- Use as a sauce in this Corned Beef Pasta Bake
Fat Free Slow Cooker Tomato Sauce (Marinara Sauce)
- 800 g (4 cups) canned tomatoes (2 cans)
- 3 medium tomatoes (roughly chopped)
- 1 small onion (peeled and roughly chopped)
- 3 garlic cloves (peeled and sliced in half)
- 2 tbs tomato puree
- 2 stalks fresh basil
- pinch dried oregano
- salt and pepper ((to taste))
- Simple pop all the ingredients into your slow cooker, and stir.
- Cook on low, with the lid on, for about 8 hours or overnight. If needed cook for another hour or two with the lid of the slow cooker slightly ajar to reduce further.
- Blitz to a smooth sauce with a stick blender.
- Allow to cool before packing into tubs, glass jars or ice cube trays ready for freezing.
Love canned tomatoes? Find lots of fuss free easy recipes using tinned tomatoes here …
Or, since cheese and tomato is a classic combination, how about making my easy hot cheese dip for a pre-dinner treat?
What a fabulous idea to make this in the slow cooker!!! I absolutely love the ice cube tray tip!! Great pics!
So easy to make, let the cooker get on with it and go and do something else. Ideal .
Like you I am a huge fan of pre-preparations. It makes weeknight cooking a lot easier. I am just loving the thickness of the marinara sauce here. I do not have a slow cooker but can imagine it would work just as well in my römertopf!
I’m sure it would work Meeta.
Hmmm, why didn’t I think about making tomato sauce in my slow cooker?! Going to try!
So easy to do Lisa, and use the time to do other stuff.
You can’t beat a homemade tomato pasta sauce – we actually just posted one ourselves. It beats the Jarred stuff any day.
I saw yours yesterday, when I was working on finishing my draft which I made and shot way back in November!
Sarah Irving | The Urban Wanderer
Excellent recipe, Helen, and the perfect way to make batch sauces. It can sometimes be a bit of a bind having to pull everything together all of the time, so I love the idea of making and storing some for later – especially as the slow cooker does the work while I play. Thanks!
Such a good way of using the slow cooker, and making batch sauces is ideal for saving time later.
Love a good marinara sauce. I love making mine in a slow cooker and freezing too!! That helps me on days when I am busy with my cake orders. Love the pretty red color…
I imagine that the last thing you want to do after one of your amazing cakes is to cook anything!
Olivia Jade??? (@dungareesdonuts)
Oh wow, I was weirdly looking for a recipe last night to make this. A lot of them over complicate it or taste nothing like the real thing. Just need to get a hand blender, and I can get making this for my weeks meal prep! x
you could pass it through a sieve or use a jug blender. But a stick blender is so cheap and such a useful thing to have.
Oh that looks lovely, we tend to make pasta sauces from scratch but doing them in the slow cooker would make it a lot easier!
So very easy Kate, and making a batch saves more time later.
I love making homemade tomato sauce, the flavour you can get in it and just how fresh it tastes beats anything! I’m definitely going to try your recipe x
So much better than the jar versions available, and so easy to make.
I’ve got 2lbs of tomatoes sitting in my freezer so I think I know what I am going to be making! Thanks Helen.
use them, make the sauce and then refill the freezer!
This looks yummy & sounds so easy to make! It’s also amazing that it’s freezable! x
Really handy to freeze, ready for easy use.
Liv @ Healthy Liv
This looks delicious! I’ve never tried making tomato sauce in the slow cooker but it’s a great idea!
So easy to do Liv, and can spend the time doing something else entirely different.
I love foods that you can make and store. Great for those days when your late in, just a simple heat, add pasta and parmesan yummy :0
I also have a tub of grated Parmesan in the freezer – ideal for a lazy super.
Kaz | Ickle Pickles Life and Travels
This is a great sauce – I would use this a lot as we love pasta! I have never used a slow cooker to make a sauce. Kaz
I love my slow cooker sauces. throw it all in and go and do something fun, or sleep, whilst it cooks!
Ooh, this sauce looks absolutely divine! I will definitely have to give it a try :)
So easy to make, and so useful to have in the freezer ready to go.
Thank you for this recipe. I’m anxious to try it.
Though it would admittedly not be **as** tasty, could you give a recommendation for how much dried basil might make for a good substitute in this recipe for the 2 stalks of fresh?
I’d think a teaspoon – I’m generally not a fan of dried herbs – I think that a woody herb like oregano would work better here.