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How to Can Roasted Tomato Sauce #foodpreservation #prepping

**Quick disclaimer – Water bath canning is NOT recommended as a safe way to preserve this recipe. The recipe has not been tested for acidity level, and it not officially approved for water bath canning. If you want to preserve this long term, I recommend freezing the sauce instead of water bath canning. 

One of my new favorite home canned foods is Roasted Tomato Sauce. This tomato sauce is an easy, delicious, and versatile sauce. It’s great for quick pasta night meals – fabulous in lasagna, spaghetti, over ravioli or tortellini.  I came up with the idea for this sauce last year thanks to many other awesome bloggers, but this is the first year I have canned it. Last year I froze the extra I had and it was really nice to pull a bit of this out of the freezer for a quick meal. We loved it so much, that I decided I must can it this year. Even though I liked it frozen just fine, I just don’t have the freezer space for as much as I need. I have a lot of shelf space though!  So far, I have canned 26 quarts of this delicious roasted tomato sauce. Here’s how you can to!

How to can roasted tomato sauce

How to Can Roasted Tomato Sauce

tomatoesFirst, make the sauce. Start with a good amount of tomatoes. I grew San Marzano tomatoes this year from seeds I purchased at Baker Creek. This is the first year I have grown them, and I am very impressed! I will grow them again next year for sure. I also throw in any cherry or grape tomatoes I have, as well. First, wash tomatoes thoroughly. Cut off any bad spots and the stem and bottom end if you want. You do not need to peel them. Scandalous, I know. I never peel tomatoes I can – it takes too much time and I am a lazy canner. 🙂 I have to find ways to reduce my time commitment.

roasted tomato sauceCut tomatoes in half and put on a cookie sheet or in a 9 x 13 pan. I recommend the 9×13 because they become quite juicy and can overflow into your oven and make a big mess. {ask me how I know this…} Add garlic and fresh basil, top with good quality olive oil, sea salt and pepper. Then roast at 425 degrees for an hour. You can read more detailed directions on this process here.

roasted tomatoesAfter an hour, pull them out of the oven and they will look ugly, like this. But your kitchen will smell heavenly! I promise.

puree roasted tomatoesLet the tomatoes cool for 15-20 minutes and then put them in a blender. I use my Vitamix.
roasted tomato sauceBlend on high for 30 seconds or so, and VOILA! Roasted Tomato Sauce!

At this point, you can stop. You can freeze, you can eat, you can hide it. 🙂 If you would like to can this delicious sauce to eat in December, though,  read on.

roasted tomato sauceMake all of your sauce and put it in a great big stock pot. Simmer it to keep warm.
water bath cannerGet the water heating up in your water bath canner. Once it’s boiling, sterilize your clean jars by boiling them for 10 minutes. Don’t you love my plywood back splash? Living in a barn is just swell… 😉
prepare canning lidsPrepare your canning lids by submersing them in steaming, but not boiling, water for a few minutes. I use both BPA free Tattler Reusable Canning Lids and the normal Ball Canning Lids which are now also supposed to be BPA Free now!! YAY!!
roasted tomato sauce Fill up your jars- you want at least 1/4 in headroom left AFTER you add 2 TBS lemon juice concentrate (VERY IMPORTANT STEP!!) per jar, wipe the lid to remove any food — you want your jars to seal, after all. As you finish each jar, place it in the water bath canner to keep it hot. It is recommended that you completely finish one jar at a time for optimal results – not the batch method I display here… Do as I say, not as I do. 🙂
roasted tomato saucePut your lids on and tighten securely.how to can roasted tomato sauce.Once your canner is full, boil the jars for 45 minutes. Add 5 minutes per 1,000 feet to compensate for the altitude. I live at just under 1,000 feet. So if you live at 2,000 feet, process for 50 minutes instead. And so on. If you don’t know your altitude, just google it.

canned roasted tomato sauceCarefully remove the jars and put them on a clean towel. Let them cool for a full 24 hours before you move them. Sit back and listen to the wonderful pings of the sealing jars! After 24 hours, make sure all of your jars have sealed. Wipe them down, remove the rings, and put them on a shelf to admire. If any jars didn’t seal, you can heat the sauce back up and try again.

And that’s how you can roasted tomato sauce. I’d love to hear if you’ve made this recipe and what you thought! Enjoy!!

SHARON L IVERSON

Monday 1st of August 2022

How many pounds of tomatoes makes 7 quarts of tomato sauce?

Michelle Marine

Monday 1st of August 2022

About 35 pounds!

SHARON L IVERSON

Monday 1st of August 2022

Can I put the sliced tomatoes into large aluminum pans to put into the oven instead of using glass etc.? Or will there be a chemical reaction to the aluminum. I am talking about the large aluminum pans that are disposable.

Michelle Marine

Monday 1st of August 2022

The high acidity level of the tomatoes will likely cause aluminum leaching. I would not recommend using them.

SHARON L IVERSON

Monday 1st of August 2022

When I have made tomato sauce before without peeling the tomatoes, there has been little pieces of skin in the sauce which I don't like. Does the blender break up the pieces of skin?

Michelle Marine

Monday 1st of August 2022

They will be broken up by the blender, but you'll probably still notice some. If they bother you a lot, you might want to peel first.

Sandy Hegel

Sunday 30th of August 2015

Thank you for the easy recipe! I can't wait to try it. I will be freezing the sauce. Sandy

Michelle Marine

Monday 31st of August 2015

You're welcome, Sandy. I'm glad you like it. :-)

Wendy

Monday 26th of January 2015

At what point do you add lemon juice? Into each jar and if so do you stir it in or just pour on top? Thanks

Michelle Marine

Monday 26th of January 2015

Hi Wendy, you add the lemon juice at the very end and there is no need to stir it in. Good luck! :-)

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As an Amazon Associate Michelle Marine, SimplifyLiveLove, earns from qualifying purchases.