Thick, cozy broccoli cheddar soup lands with the kind of creamy spoonful that makes people pause after the first bite. The broccoli stays tender instead of turning to mush, the broth picks up a mellow sweetness from the carrots and onion, and the cheddar melts into the base without tasting heavy or greasy. It’s the sort of soup that eats like a meal, not a starter.
The pressure cooker does the part that usually takes the most patience: softening the vegetables and concentrating the broth fast. The real trick is adding the cheese after the pressure cooking is done, once the soup has cooled slightly and the heat is lower. That keeps the cheddar smooth instead of stringy or grainy. A little Dijon sharpens the finish, and smoked paprika gives the whole pot a deeper, more rounded flavor than plain broccoli cheese soup usually has.
Below, you’ll find the exact order that keeps the base silky, plus the best way to partially blend the soup so it still has texture. There are also a few smart swaps if you want to use what you already have on hand.
The cheese stayed smooth and the soup got thick without needing a ton of flour. I loved that the broccoli still had some texture, and the Dijon gave it a little something extra without tasting mustardy.
Save this Instant Pot broccoli cheddar soup for the nights when you want a thick, cheesy bowl without standing over the stove.
The Secret to Soup That Stays Creamy Instead of Turning Gluey
Broccoli cheddar soup can go wrong in two common ways: the broth turns thin and bland, or the cheese seizes and leaves you with a grainy pot. This version avoids both by building the base first, before the pressure cook, so the flour has a chance to cook out and thicken the broth evenly. If you skip that step, the soup can taste raw and never quite settle into that creamy, velvety body you want.
The other place people run into trouble is the cheese. Sharp cheddar melts best when it’s added off the heat in small handfuls, not dumped in all at once. High heat tightens the proteins in the cheese and can give you a sandy texture. The quick release helps too, because the soup stops cooking hard the moment the pressure comes off.
What Each Ingredient Is Actually Doing in This Soup
- Broccoli florets — Cut them small so they cook quickly under pressure and still hold some shape. Big pieces can end up stringy on the outside and underdone in the middle.
- Sharp cheddar — This is the flavor anchor, so use a block and shred it yourself if you can. Pre-shredded cheese has anti-caking starches that can make the soup less smooth.
- Heavy cream — It softens the sharpness of the cheddar and gives the soup that classic rich finish. Half-and-half works in a pinch, but the soup will be a little less lush.
- Flour and butter — These form the roux that gives the broth body. Cook the flour for a minute or two so the soup doesn’t taste pasty.
- Dijon mustard — You won’t taste mustard as a separate note. It sharpens the cheese and makes the whole bowl taste more complete.
- Smoked paprika — This adds a gentle depth that plain paprika won’t give you. It rounds out the sweetness from the carrots and onion without taking over.
- Chicken or vegetable broth — Either one works, but a broth with decent flavor matters here because the soup doesn’t simmer for long. If yours is very salty, hold back on the seasoning until the end.
Building the Base, Pressure Cooking, and Finishing the Cheese
Cooking Down the Onion and Garlic
Start on Sauté and let the butter melt completely before the onion goes in. Cook the onion until it looks glossy and soft, not browned, because you want sweetness, not caramelization. Add the garlic just long enough to smell fragrant; if it starts to brown, it turns bitter fast. Stir in the flour and keep it moving so it looks pasty and coats the onions without clumping.
Whisking in the Broth Without Lumps
Pour the broth in gradually while whisking or stirring constantly. The roux will thicken first, then relax into a smooth base as more liquid goes in. If you dump all the broth in at once, you can trap flour in little pockets that never fully dissolve. Keep scraping the bottom of the pot so nothing sticks before pressure cooking.
Pressure Cooking the Vegetables
Add the broccoli, carrots, and smoked paprika, then lock the lid and cook on High for 3 minutes. That short time is enough because the vegetables are chopped small and the broth is already hot. Quick release matters here; if you let it naturally release too long, the broccoli softens past the point where it still looks like broccoli. You want tender stems and florets that still have some shape.
Blending and Melting in the Cheese
Stir in the cream and Dijon first, then use an immersion blender to partially blend the soup. Leave some broccoli pieces intact so the soup still has body. Add the cheddar in handfuls with the pot off the heat or set to low, stirring until each addition melts before the next goes in. If the soup looks grainy, the heat was too high when the cheese went in.
Three Ways to Adjust This Broccoli Cheddar Soup
Make it vegetarian
Use vegetable broth instead of chicken broth and nothing else needs to change. The cheddar still gives the soup plenty of depth, and the smoked paprika helps replace the savory backbone you’d otherwise get from chicken stock.
Make it gluten-free
Swap the all-purpose flour for a gluten-free 1:1 flour blend that includes xanthan gum, then whisk it into the butter just as you would regular flour. The texture will still thicken nicely, though it may be slightly softer than the classic version.
Make it a little lighter
Use half-and-half instead of heavy cream and reduce the cheddar by a half cup. The soup will still taste rich, but it will be a little thinner and less dense, which works well if you’re serving it with bread or a salad.
Storage and Reheating
- Refrigerator: Store for up to 4 days. The soup thickens as it chills, so it may look a little firmer the next day.
- Freezer: It can be frozen, but dairy-based soups sometimes separate when thawed. If you do freeze it, cool it completely first and reheat gently while whisking.
- Reheating: Warm it slowly on the stove over low heat or in short bursts in the microwave. High heat can make the cheese break, so patience matters more than speed here.
Answers to the Questions Worth Asking
Instant Pot Broccoli Cheddar Soup
Ingredients
Equipment
Method
- Set the Instant Pot to Sauté and melt the butter, then cook the diced onion for 3 minutes until softened (about a gentle sizzle).
- Add the minced garlic and the flour, then cook for 1-2 minutes while stirring to remove the raw flour taste (keep it at active simmering on Sauté).
- Gradually whisk in the broth until smooth, scraping any browned bits from the bottom so no lumps remain.
- Add the broccoli florets, shredded carrots, and smoked paprika, then seal the lid and pressure cook on High for 3 minutes.
- Quick release the pressure, then stir in the heavy cream and Dijon mustard until the soup looks evenly creamy.
- Use an immersion blender to blend partially to your desired consistency, leaving some broccoli chunks for texture.
- Stir in the shredded sharp cheddar in handfuls until melted and smooth, then season with salt and pepper to taste.