Instant Pot Copycat Campbell’s Tomato Soup (No Burn Notice)

Instant Pot Copycat Campbell’s Tomato Soup tastes like the can you grew up on — smooth, a little sweet, and creamy from real milk instead of a condensed concentrate. It’s done in about 30 minutes, and I’ll show you the layering trick that keeps your pot from throwing a BURN error.

Why This Tastes Like the Real Thing

Most homemade tomato soups don’t actually taste like Campbell’s. They taste like marinara — because they’re loaded with Italian seasoning, garlic, and basil.

Campbell’s is the opposite of that. Read the can: tomato purée, water, sugar, salt, and a whisper of onion and celery flavor. That’s it. No oregano. No thyme. Barely any garlic. It’s plain on purpose, and the plainness is what makes it taste like childhood.

So this recipe goes minimal. Two cloves of garlic instead of a fistful. No Italian seasoning at all. A little sugar to hit that familiar sweetness, and whole milk stirred in at the end for the creamy texture you get when you make the canned version with milk instead of water.

If you want the herby, restaurant-style version instead, I’d point you toward my Instant Pot Copycat Nordstrom’s Tomato Basil Soup — that one leans hard into fresh basil and is a completely different soup.

Ingredients

The full measurements are in the printable recipe card below. Here’s what each thing is doing:

• Butter — sautés the onion and adds the round, slightly rich flavor the canned soup has. Olive oil works but tastes greener.
• Yellow onion — the backbone. Dice it fine so it disappears when you blend.
• Garlic, 2 cloves only — enough for depth, not enough to announce itself. This is the ingredient most copycat recipes get wrong.
• Tomato paste — bloomed in the butter for a minute, it deepens the tomato flavor and takes away the raw canned edge.
• Canned whole peeled tomatoes — whole, not diced. Diced tomatoes are treated with calcium chloride to hold their shape, which means they resist breaking down and blending smooth. San Marzano if your budget allows.
• Chicken or vegetable broth — only 1½ cups. Most recipes use three, and that’s why they come out watery.
• Sugar — 2 teaspoons. Campbell’s is sweet. Skip this and it won’t taste right.
• Baking soda — ¼ teaspoon, and this is the secret. It neutralizes some of the acid in the tomatoes so the milk won’t curdle when you add it. More on that below.
• Whole milk — stirred in off the heat at the end. Whole, not skim. Half-and-half if you want it richer.
• Kosher salt

How to Avoid the BURN Notice

This is the part every other tomato soup recipe skips, and it’s the reason people give up on making soup in a pressure cooker.

Tomato products are thick and dense. When you dump them in and stir, they sink and sit against the bottom of the pot, and the Instant Pot’s sensor reads that scorching as a burn. You get a BURN warning, the pot never comes to pressure, and dinner is ruined.

Two rules fix it:

1. Deglaze after sautéing. Once the onions are soft, pour in the broth and scrape the bottom of the insert with a wooden spoon until nothing is stuck. Any browned bits left behind become tomorrow’s burn notice.
2. Layer, don’t stir. Broth goes in first. Tomatoes go on top. Then walk away. You want the thinnest liquid touching the bottom of the pot and the heavy tomatoes floating above it. Resist the urge to mix — you’ll stir it plenty after it’s cooked.

I’ve made this maybe a dozen times, and the one time I got a burn notice was the time I stirred out of habit.

Instructions

Step 1 — Sauté. Press Sauté and melt the butter. Add the diced onion and cook 4 to 5 minutes until soft and translucent, stirring so it doesn’t brown. Add the garlic and tomato paste and cook 1 minute more, until the paste darkens slightly and smells sweet.

Step 2 — Deglaze. Pour in the broth and scrape the bottom of the pot completely clean. Press Cancel.

Step 3 — Layer. Pour the canned tomatoes and their juices on top of the broth. Add the sugar and salt. Do not stir.

Step 4 — Pressure cook. Lock the lid, set the valve to Sealing, and cook on High Pressure (Manual) for 8 minutes.

Step 5 — Natural release. Let the pressure drop on its own, about 15 minutes. Don’t quick-release this one — hot tomato soup will spit out of the valve.

Step 6 — Blend. Stir in the baking soda; it will foam for a few seconds, which is normal. Then blend with an immersion blender right in the pot until completely smooth, 60 to 90 seconds. Longer than you think — the smoothness is what sells the copycat.

Step 7 — Add the milk. With the pot off, stir in the milk slowly. Taste and adjust salt and sugar. Serve hot.

Which Instant Pot Size You Need

Use a 6-quart or larger. This recipe makes roughly 7½ cups of liquid before the milk goes in, and thick liquids shouldn’t fill a pressure cooker past the halfway line.

If you have the 3-quart Mini, halve everything. A full batch will push past the max fill line, and overfilling a pressure cooker with something thick is how you clog the valve.

Pro Tips

• Whole tomatoes, blended long. Texture is most of what makes this read as “Campbell’s.” If it’s even slightly grainy, keep blending.
• The baking soda is optional but useful. If you’d rather skip it, temper the milk instead: whisk a ladle of hot soup into the milk in a separate cup, then stir that mixture back into the pot. Cold milk into hot acidic soup is what curdles.
• Taste before you salt again. Canned tomatoes vary wildly in sodium. Some brands are salted heavily, some not at all, so start with 1 teaspoon and adjust at the end.
• Too acidic? Another ½ teaspoon of sugar usually fixes it faster than more salt.
• Too thick? Thin with milk, not water, or you’ll lose the creaminess.
• Make it dairy-free. Full-fat canned coconut milk works and the coconut flavor is milder than you’d expect once the tomato takes over. Swap the butter for olive oil and use vegetable broth.

What to Serve With It

Grilled cheese, obviously. I make mine in the air fryer now because the crust comes out evenly golden instead of blotchy — here’s my air fryer grilled cheese if you want the method.

For texture on top, a handful of homemade air fryer croutons beats anything from a bag, and they take five minutes with stale bread you were going to throw out.

Otherwise: crusty bread, a few torn basil leaves, cracked black pepper, or a little grated Parmesan.

Storing and Freezing

Refrigerator: up to 4 days in an airtight container.

Freezer: up to 3 months, but freeze it before you add the milk. Dairy separates when frozen and thawed, and you’ll get a grainy soup. Freeze the tomato base, then stir in fresh milk when you reheat.

Reheating: low heat on the stovetop, stirring. Don’t let it boil once the milk is in.

Frequently Asked Questions

Can I use fresh tomatoes instead of canned? You can, but canned is genuinely better here. Canned tomatoes are picked and processed at peak ripeness, so they’re more concentrated year-round than most grocery store fresh ones. If you do use fresh, you’ll want about 3 pounds, peeled, and the flavor will be brighter and less like the canned soup you’re copying. Roasting them first helps — that’s the approach I take in my Easy Air Fryer Tomato Soup.

Why did I get a BURN notice? Almost always because the tomatoes were stirred into the broth instead of layered on top, or because something was stuck to the bottom of the pot after sautéing. See the section above.

Can I use an immersion blender in the Instant Pot? Yes, and it’s the easiest way. Just unplug the pot first and keep the blender head fully submerged so it doesn’t spray. If you’re using a countertop blender instead, let the soup cool for 10 minutes and work in batches with the lid vented — hot liquid builds pressure in a sealed blender jar.

Why is my soup curdled? Cold milk hit hot acidic soup too fast. Add the baking soda before the milk, add the milk off the heat, and pour slowly. It’s not salvageable once it breaks, but it’s entirely preventable.

Can I make this in a Ninja Foodi or another pressure cooker? Yes. Any electric pressure cooker with a sauté function works, and the times don’t change.

Can I make this in a slow cooker instead? Yes, but the liquid ratio changes — slow cookers don’t evaporate, so three cups of broth will leave you with something watery. I’ve written it up properly as a separate recipe.

Is this gluten-free? Yes, as written. Check your broth label if you’re cooking for someone with celiac — some brands aren’t certified.

How is this different from your other tomato soups? This one is intentionally plain, to taste like the can. My Copycat Jason’s Deli Tomato Soup adds carrot and cream for a rounder, sweeter restaurant version, and the Instant Pot Olive Garden Cream of Tomato and Basil Soup is the herby, basil-forward one.