Crockpot Spaghetti Sauce


10 Cups of tomatoes roughly chopped

2 Tbsp basil, fresh (or tsp dried)

1 Tbsp oregano, fresh (or 1 tsp dried)

1 Tbsp parsley, fresh (or 1 tsp dried)

6 Cloves garlic roughly chopped

1 C onion chopped

6 oz canned tomato paste (optional)

1⁄8 tsp baking soda

Salt and pepper to taste

Crockpot Spaghetti Sauce

Sep 15, 2022Brian Witmer
Contributed By: Live. Life. Simple.

This will make 2 medium trays *


  1. Rinse your tomatoes and core them. Drop them in a pot of boiling water for one minute.
  2. Scoop them out with a slotted spoon and put them in a bowl of ice water. Now the skins will slip off easily.
  3. Cut in half (quarters for larger tomatoes) and push the seeds out with your thumb.
  4. Add the tomatoes and all the ingredients (except baking soda) to your slow cooker. Cook on low for 10 hours or high for 7 hours. Stir occasionally if possible. The sauce should be reduced by about half.
  5. If you want a less chunky sauce, pulse it a few times with an immersion blender or mash it a bit with a potato masher or large spoon. Add the canned tomato paste at this point if you'd like a thicker sauce.
  6. Add the baking soda (it will foam a bit), salt and pepper, and additional herbs to taste.
  7. Cool
  8. Put onto silicone lined trays, add dividers for portions, and pre freeze
  9. Freeze Dry
  10. Making this one day and then refrigerating it overnight gives it extra flavor
  11. Store Appropriately (See Tips and Tricks for storage help)


Cycle Time: 

My cycle time was 30 and 1⁄2 hours in a medium freeze dryer with 3 trays full of liquid tomato products and 1 of tomato chips


Add water, stir, let sit, repeat until desired consistency is reached.


* Large Tray = 8 Cups/tray Medium = 6 Cups/Tray Small = 4 Cups/Tray

Cycle times & rehydration for reference only. Your results may vary.

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Comments (1)

  • Hi!
    I’m just wondering why you add baking soda to the Crockpot Spaghetti Sauce recipe. Does it keep the sauce from foaming up inside the freeze dryer? Thank you for your answer! Love this membership!


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