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Instant Pot Marinara Fresh Tomato Sauce recipe makes a big batch of delicious sauce that you can use as spaghetti sauce, or any recipe that calls for a flavorful pasta sauce. Pressure cooker marinara sauce from fresh tomatoes is a great way to use up your summer bounty of garden fresh tomatoes!

Marinara Fresh Tomato Sauce in a white bowl topped with fresh basil surrounded by ingredients and a red gingham napkin
Originally published 8/26/18

Homemade Instant Pot Marinara Tomato Sauce

My garden is doing very well this year, and the tomatoes are ripening, with some to pick every day! I like to make tomato sauce from fresh tomatoes, and I especially enjoy making Instant Pot Marinara Fresh Tomato Sauce.

This year I planted several varieties: Early Girl, Whopper, Beefsteak, Roma, Cherry, and Yellow Pear. Paul likes to snack on the cherry tomatoes, and I like the Early Girls and Whoppers for cheese and tomato sandwiches! Yum!

So far this season the plants have yielded about 15 pounds all together. We will get a few more pounds as the growing season is coming to an end. The Yellow Pear tomatoes will keep going for a while yet as they come on later in the summer than the others.

ripe tomatoes on a vine

You can tell how much I enjoy growing my own tomatoes! They just taste so perfect when they are homegrown. The ones in the store don’t have any flavor, as far as I’m concerned. So I don’t make Instant Pot Marinara Fresh Tomato Sauce from store bought. Ever.

I like to buy Rao’s® or Newman’s Own Marinara® if I don’t have any of my own homemade tomato sauce.

Making marinara sauce with fresh tomatoes in the pressure cooker is easy, and faster than the stove top. I love the results!

Here’s how to make Instant Pot Marinara Fresh Tomato Sauce

Four process images showing gathering of the ingredients, sauteing onion, adding tomato, and adding red wine

Four process images showing the addition of spices, tomaote paste, then setting pressure cooker cook time and blending the sauce

How To Deal With Acidic Marinara Sauce

Using fresh tomatoes to make your Instant Pot Marinara Sauce can sometimes yield a sauce that is too acidic for some tastes. It happens sometimes. Your results will vary by how sweet the tomatoes are.

The cocoa powder in the sauce helps the acidity, and it adds a nice complexity to the sauce. You will not notice it is in there. Don’t use dark cocoa as it is more bitter. Please don’t omit unless you have to!

A Few More Ways to Fix Acidic Marinara Sauce

  1. Sweeter wine will yield a sweeter sauce. Not like a dessert wine, but not a sour one either. Something you enjoy drinking.
  2. Stir in some sugar. Sugar doesn’t reduce acidity, but it does help mask it.
  3. Add some Baking Soda. Baking soda is an acid neutralizer, and works very well (I drink it mixed with water when I have an acid attack in my tummy). When adding it to your sauce, start with 1/4 tsp and sprinkle it on the sauce. You will see it get fizzy. Just let it do that and then stir it. Taste, and add another 1/4 tsp if necessary. Be careful not to add too much as baking soda is bitter tasting.
  4. Add some salt. Adding some extra salt sometimes does the trick, however you need to be really careful not to add too much. I have only used salt once for this, and that was because I added too much sugar.
  5. Toss in a sliced carrot before cooking. My reader Cara learned that from an Italian neighbor she had (thanks, Cara!)!

You Might Also Like These Recipes that Use this pressure cooker Fresh Marinara Tomato Sauce

Instant Pot Spaghetti and Meatballs
Instant Pot Lasagna
Instant Pot Pizza Pasta Casserole
Instant Pot Meatball Pasta Dinner

If you make this wonderful pressure cooker marinara sauce, please leave me a comment below. I’d love to know how you liked it!

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Marinara Fresh Tomato Sauce in a white bowl topped with fresh basil
4.95 from 51 votes

Instant Pot Marinara Fresh Tomato Sauce

By Sandy Clifton
Instant Pot Marinara Fresh Tomato Sauce recipe makes a big batch of delicious sauce that you can use as spaghetti sauce, or any recipe that calls for a flavorful pasta sauce. A great way to use up your summer bounty of garden fresh tomatoes!
Prep: 35 minutes
Cook: 40 minutes
Natural Release: 20 minutes
Total: 1 hour 35 minutes
Servings: 10 cups
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Ingredients 

  • 4 Tablespoons Olive Oil
  • 1 small Onion, chopped
  • 5 cloves Garlic, minced
  • 5 lbs Tomatoes*, chopped, about 9 1/2 cups (any variety or mix)
  • ½ cup Red Wine
  • ½ cup Water** (optional) see Notes
  • 3 teaspoons Kosher Salt
  • ½ teaspoon Pepper
  • 1 Tablespoon Cocoa Powder, unsweetened (cuts acidity and adds a complexity. You won't notice it). Don't use dark!
  • 2 teaspoons Basil, dried
  • 2 ½ Tablespoons Italian Seasoning
  • ¼ - ½ teaspoon Red Pepper Flakes (or more for spicier)
  • 2 teaspoons Oregano, dried
  • 2 Tablespoons Parsley Flakes, dried
  • 3-4 (6 oz) cans Tomato Paste

Add Only if the Sauce is too Acidic (After Pressure Cooking)

  • 2 teaspoons Sugar (optional, if needed)
  • ¼ - ½ teaspoon Baking Soda (optional, if needed)

Instructions 

  • Before you begin the cooking process, have all of your veggies chopped & ingredients measured and ready to go.
  • Turn on the Sauté setting. When the pot is Hot, add the olive oil. Don't add the oil to a cold pot. Then add the onion and cook, stirring occasionally, until turning translucent.
  • Add the minced garlic and cook, stirring constantly, for about 30 seconds.
  • Add the chopped tomatoes and stir.
  • Add the red wine, salt, pepper, cocoa powder, basil, Italian seasoning, red pepper flakes, oregano, and parsley flakes. Stir well to combine.
  • Add the tomato paste, but do not stir it in. Leave it sitting on top. If you stir it in it will be too thick and the pot may scorch and not come to pressure.
    Also, you will not have to add any additional liquid as the red wine and juice from the tomatoes is plenty to get the pot to pressure.
  • Close the lid and set the steam release knob to the Sealing position. Then press the Pressure Cook (or Manual) button or dial to select 25 minutes (You can cook less time, but I tested and liked this time best).
  • After the cook cycle is finished, turn the pot off so it doesn't go to the Warm setting. Then leave it to Naturally Release the pressure until the pin in the lid drops down. Then open the lid and give the sauce a stir. Careful of the hot sauce splattering, so stir slowly!
  • Taste, and if the sauce is too acidic, either add the sugar, or add the baking soda. Stir it in and let it sit a while. Then taste and adjust as necessary.
  • Let the sauce cool, then use an immersion blender, food processor, or blender to puree it nice and smooth. It is best to do this when the sauce has cooled.
  • Transfer the sauce to jars with lids and keep in the fridge for up to 5 days. You can freeze it as well.

Notes

*Don't bother peeling the tomatoes. The skin cooks down and the immersion blender or food processor takes care of it. You won't even notice!
**If your tomatoes are not very juicy, add ½ cup of water when you add them to the pot. This will help the pot come to pressure easier. You can use the sauté setting to cook off extra water after pressure cooking if the sauce is too thin.
Canning: If you want to can this sauce, please look up how to adjust for canning as you will need to add citric acid or lemon juice, etc. Note that the Instant Pot® is not for canning.

Nutrition

Calories: 97kcal

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: sauces
Cuisine: Italian
Tried this recipe?Mention @simply_happy_foodie

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