Veggie Marinara Sauce | Starch Solution Recipe

Veggie Marinara Sauce | Starch Solution Recipe

This delicious veggie marinara sauce can be used in so many different ways!  This Starch Solution-approved Veggie Marinara sauce is perfect for pizza, spaghetti, soup, and more!



I like to can this sauce to preserve it for a longer period of time but you certainly don’t have to. You can use it right away, keep it in the refrigerator for a week, or freeze it to use at a later date.

You can also make less or more, depending on how much you want to keep in your fridge.


  • 8 cups of small to medium-sized tomatoes (if you’re using large tomatoes, cut them in half to fit in your Instant Pot)
  • 2.5 - 4 cups of diced white onion (I used frozen but you can use fresh!)
  • 4 cups of diced bell peppers (I used orange but you can use any kind)
  • 2 tbsp of minced garlic (I used frozen)
  • 6 cups of shredded or diced zucchini (I used frozen)
  • 1 tbsp of brown sugar
  • 1 tbsp of dried or fresh rosemary
  • 1 tbsp of dried oregano
  • 1 tbsp of dried parsley
  • 1 tbsp of dried basil
  • 1 tbsp of salt
  • 1-2 cans of tomato paste


  1. Add your tomatoes to your Instant Pot and put on “Slow Cook” mode to cook/soften your tomatoes
  2. Keep them cooking in the Instant Pot for about 45 min to 2 hours (depending on how quick you want to make the sauce)
  3. Sautee your onions in a large pan
  4. Add your bell peppers to the sauteed onions and cook until soft
  5. Then, add in your minced garlic and cook until all ingredients are soft and golden brown
  6. After your tomatoes have been cooking for 45 to 2 hours, add in your zucchini and keep cooking
  7. Then, add in your onion, garlic, and bell pepper mixture to your Instant Pot and stir to incorporate into the sauce base
  8. Grab your immersion blender and start blending the ingredients until you get your desired consistency (chunky, smooth, etc.)
  9. Add in your spices, herbs, and salt
  10. Then, add in your tomato paste

I hope you enjoyed this recipe! If you make these delicious treats, make sure to tag me on Instagram. @fullandfulfilled ❤️

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