Instant Pot Tomato Paste Recipe: Thick, Rich Base for Sauces in 15 Minutes

Creating a thick, restaurant-quality tomato paste in your Instant Pot is faster and more flavorful than store-bought versions—this recipe delivers a rich, concentrated base in just 15 minutes. The secret lies in controlling the reduction process to balance depth and intensity while preserving natural sweetness.

I developed this method after years of testing, and it consistently produces a paste that elevates sauces, soups, and marinades without overpowering them.

This recipe starts with fresh tomatoes (or canned for convenience) and builds layers of flavor through precise cooking techniques. The Instant Pot’s pressure function creates an even reduction, while open-air simmering at the end ensures a smooth, velvety texture.

No special equipment beyond your Instant Pot and a fine-mesh strainer is needed—just simple ingredients and attention to timing.

What you’ll end up with is a deeply aromatic tomato paste with concentrated umami notes, perfect for building complex sauces or using as a marinade. The paste thickens beautifully when reheated, making it ideal for meal prep.

Whether you’re making marinara, bolognese, or a bold stew base, this paste adds professional-level depth to every dish.

For variations, experiment with garlic, red pepper flakes, or a touch of sugar to customize the flavor profile. Store in the fridge for up to a week or freeze for longer shelf life. Let’s get started on this versatile, foolproof sauce base!

Ingredients for instant pot tomato paste

Nine simple ingredients transform into a velvety tomato paste with restaurant depth.

The tomatoes are the foundation—Roma are ideal for their meaty texture and low water content, but any ripe variety works. San Marzano canned tomatoes add sweetness and acidity that’s hard to beat, though fresh crushed tomatoes work too. For the olive oil, California extra-virgin (like Corto or Colavita) brings the best fruity notes without overpowering. The vinegar might seem small, but it’s what cuts through the richness and keeps the paste bright. I always grab Whole Foods or Trader Joe’s for my tomatoes—they’re consistently ripe and flavorful. If you’re using fresh tomatoes, don’t skip the salt in the water when blanching them—it preserves their natural sweetness.

No red wine vinegar? Balsamic vinegar or lemon juice work in a pinch, though the flavor will shift slightly. Running short on fresh basil? Dried basil at one-third the amount gives you a similar earthy note, but fresh is worth hunting down at the market. The sugar might seem counterintuitive, but it’s what balances the acidity and prevents the paste from tasting harsh. No sugar? A pinch of honey works too. For the garlic, I always use fresh—pre-minced garlic from jars has a metallic taste that ruins everything. If you’re making this for a crowd, double the tomatoes and adjust the other ingredients proportionally. The Instant Pot handles big batches beautifully.

This paste keeps for 1 week in the fridge sealed in an airtight container, but it freezes like a dream for up to 6 months. I portion mine into ice cube trays before freezing—just pop out what I need for each recipe. The paste thickens even more when reheated, so always stir in a splash of water or broth if it seems too stiff. For meal prep, make a big batch and store in glass jars—they’re dishwasher-safe and keep the paste fresher longer than plastic. The aroma when you open the jar is what makes this worth every minute.

Step-by-step instructions for Instant Pot tomato paste

This method transforms simple ingredients into a velvety, concentrated tomato base faster than traditional stovetop methods.

Set your Instant Pot to “Sauté” mode and add the 0.25 cup extra-virgin olive oil. Once hot, add the 1 whole yellow onion and cook for 5 minutes until softened and translucent. The onions should release their sweetness and begin to caramelize slightly at the edges.

Add the 4 cloves garlic cloves and cook for 30 seconds until you can smell their aromatic oils wafting through the pot. Don’t let them brown—just until they’re fragrant and slightly softened. This step builds the flavor foundation that carries through the entire paste.

Add the 2 lb fresh roma tomatoes (halved) and the 1 can canned san marzano tomatoes (crushed by hand). Stir to combine, then add the 2 tbsp red wine vinegar and 1 tbsp granulated sugar. The vinegar brightens the acidity while the sugar helps balance it naturally, creating a more complex flavor profile.

Cook for 5 minutes on Sauté mode, stirring occasionally. You’ll see the tomatoes begin to break down and release their juices. This pre-cooking step helps prevent the Instant Pot from overflowing when you seal the lid. The mixture should be simmering gently by the end of this time.

Secure the lid and set the Instant Pot to “High Pressure” for 12 minutes. This timing creates the ideal balance between fully cooking the tomatoes and achieving that thick, concentrated texture. The pressure build-up will take about 5 minutes, so don’t walk away—you want to monitor the process.

Once the cooking cycle completes, allow a 10-minute natural release before quick-releasing any remaining pressure. This gradual release prevents the tomatoes from becoming watery. You’ll know it’s ready when the pressure valve drops and the lid can be opened safely.

Remove the lid and stir in the 1.5 tsp diamond crystal kosher salt and 0.25 cup fresh basil leaves. Use an immersion blender to puree the mixture until completely smooth. If you don’t have an immersion blender, carefully transfer the contents to a regular blender (in batches if needed) and blend until silky.

Taste and adjust seasoning—you might want to add a pinch more salt or a splash of water if the consistency is too thick. The paste should coat the back of a spoon with a velvety texture. Let it cool slightly before using, as the heat will continue to thicken it as it sits.

Serving suggestions for this dish

Sauce Base Mastery

Use this tomato paste as the foundation for homemade marinara—simmer ½ cup paste with 1 cup canned tomatoes, 2 tbsp olive oil, and 1 tsp dried oregano for 15 minutes on low heat.