STREAMING NOW: Simply Nigella

Slow Cooker Ketchup - Simple Sugar & Gluten Free

sparkle sparkle

Want more from Genius Kitchen?

Watch on your Apple TV, Roku, or Fire TV and your iOS, Fire, or Android device.

Learn More
“This is from the cookbook by Amy Green, Simply Sugar and Gluten Free. I have not tried this yet. Putting it here for safekeeping.”
2hrs 40mins
4 cups

Ingredients Nutrition


  1. Combine all the ingredients except the salt and pepper in a large (4 to 6 quart) slow cooker.
  2. Stir well. Cover and cook on high for 2 to 21/2 hours, stirring occasionally, until the onions are very tender.
  3. Remove the lid and puree with an immersion blender, or transfer to a regular blender or food processor and puree until smooth.
  4. Season to taste with salt and pepper.
  5. Add stevia to taste.
  6. The ketchup should be nice and thick. If necessary, return it to the slow cooker and cook on high, uncovered, stirring occasionally, for 30 minutes to 1 hour, until the ketchup has reached the consistency you want.
  7. Transfer to Mason jars.
  8. Refrigerate for up to 2 months, or freeze.
  9. Quick Tip: The brown rice syrup doesn't make this ketchup sweet. Instead, it balances the acid from the tomatoes.

Watch more

Join the Conversation

  • all
  • reviews
  • tweaks
  • q & a