Instant Pot Garden Marinara Sauce

Instant Pot Vegan Garden Marinara Sauce

We use this base to make some killer meatballs, but it’s equally respectable on its own as a vegan sauce. Make and freeze for quick meals, and you’ll never have to buy that stuff in the jar again. We’ve got carrots, mushrooms, and sweet bell peppers in this mix, but you can use whatever vegetables you want in place of, or in addition to our combo.

No need to add more water if you’re piling on more veggies. They’ll cook down and release liquid under pressure. If you’re increasing volume with more vegetables, adjust seasoning to taste.

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Instant Pot Garden Marinara Sauce

Instant Pot Vegan Garden Marinara Sauce

  • Author: Fresh. Out.
  • Prep Time: 15
  • Cook Time: 20
  • Total Time: 35 minutes
  • Yield: 4-6 cups 1x


Instant Pot Garden Marinara Sauce



  • 2 14.5-oz cans petite diced tomatoes (with liquid), no salt or sugar added
  • 1/3 cup water
  • 1/4 of a small yellow onion, chopped
  • 1 large carrot, quartered and chopped
  • 810 cremini (baby bella) mushroom caps, chopped
  • 1 cup chopped bell peppers (any colors)
  • 1 tbsp red wine vinegar
  • 1 tbsp monk fruit sweetener
  • 1/4 tsp ground black pepper
  • 1/4 tsp salt, more to taste after cooking
  • 1/2 tsp garlic powder
  • 1/2 tsp dried basil
  • 1/2 tsp dried oregano
  • 1/2 tsp dried parsley
  • Extra-virgin olive oil or avocado oil for inner pot


  1. Set up your Instant Pot and spritz the bottom of the inner pot with oil to prevent sticking.
  2. Prep vegetables and set aside.
  3. In a blender or food processor (we use an inexpensive Ninja pitcher), combine one can of the tomatoes (with liquid), 1/3 cup water, onions, red wine vinegar, monk fruit sweetener, and spices. Pulse until pureed. Add the second can of tomatoes and the chopped veggies. Stir with a spoon to combine.
  4. Pour into prepared inner pot, lock the lid on your Instant Pot and make sure the steam release handle is on “sealing”.
  5. Set the cook time to 10 minutes, and pressure to high. After cooking cycle has completed, wait for natural release. When the float valve drops, open and serve, or allow to cool for portioning and freezing. Note: cook time does not include preheating and venting.

Keywords: vegan, vegetable marinara, garden marinara, pasta sauce, instant pot


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