Instant Pot Broccoli Cheddar Soup
Instant Pot Broccoli Cheddar Soup is a creamy, comforting bowl featuring tender broccoli and sharp cheddar, made quick in the pressure cooker. This easy weeknight dinner delivers big flavor with minimal fuss, perfect for chilly evenings or family meals. The velvety texture and bright vegetable notes make it a go to when you need a fast, satisfying meal.
Equipment
- Instant Pot
- Small Bowl
- Whisk
- Measuring Cups and Spoons
Ingredients
- 1 cup onion diced Sautéed until translucent and fragrant to provide a sweet, savory base that builds flavor for the soup; diced small to melt into the broth and add texture. Helps balance richer ingredients and supports aromatic development during cooking.
- 2 tablespoons butter Melted to enrich the soup with a silky mouthfeel and help sauté aromatics; contributes a subtle creamy, buttery note. Used to coat vegetables and carry fat-soluble flavors through the dish.
- 2 teaspoons garlic minced Pressed or finely chopped to release pungent, aromatic oils that deepen savory flavors; minced for even distribution throughout the soup. Adds a bright, garlicky undertone that complements the broccoli and cheese.
- 4 cups broccoli cut into small florets Steamed or pressure-cooked until tender to supply the bulk and signature vegetal flavor of the soup; cut into small florets so they soften quickly and blend smoothly. Provides color, fiber, and the characteristic broccoli taste that defines the recipe.
- 2 cups chicken broth Poured in as the primary cooking liquid to dissolve seasonings and cook the vegetables; chosen for its savory depth that enhances overall richness. Forms the base of the soup and determines final saltiness and body.
- 1 cup carrot diced Added for a touch of sweetness, color, and texture contrast when diced small and cooked until tender; helps balance the savory and creamy elements. Contributes modest bulk and nutritional variety to the soup.
- 4 tablespoons cornstarch Whisked with a liquid to form a slurry that thickens the soup without altering flavor; measured precisely to achieve a smooth, creamy consistency. Provides body so the finished soup clings to spoons and holds the cheese.
- 1/4 cup warm water Combined with the thickening agent to create a smooth slurry that prevents lumps when added to hot broth; warmed slightly to help dissolve cornstarch completely. Ensures even thickening and a glossy finish to the soup.
- 2 cups (8 oz) sharp cheddar cheese grated Grated finely to melt quickly and contribute sharp, tangy, and salty flavor; layered in gradually and stirred until fully incorporated for a creamy, cheesy texture. Acts as the primary flavor star, giving the soup its distinctive cheddar profile.
- 2 cups whipping cream Poured in to increase richness and creaminess while contributing a smooth, velvety mouthfeel; stirred in gently to prevent curdling. Balances the acidity of cheese and enhances the luxurious texture of the finished soup.
- Sea salt to taste Sprinkled to personal taste to enhance and balance flavors without overwhelming; adjusted at the end of cooking to control seasoning precisely. Brings out natural sweetness in vegetables and accentuates the savory cheese notes.
Instructions
- Heat the butter in the Instant Pot on 'Sauté' mode. Add in the onion and garlic and cook until soft, about 3 to 4 minutes.: As the butter melts, you will hear a gentle sizzle and smell a warm, inviting aroma that signals the pan is ready. This step develops a flavor foundation by softening the fat and creating a surface for the onion and garlic to release their aromatics. A common mistake is using too high a heat which causes the butter to brown or burn, introducing bitter notes; keep the pot on a moderate sauté setting and watch for a light foam and warm nutty scent.
- Add in the broccoli, chicken broth and carrot.: You will notice the onion becoming translucent and the kitchen filling with a sweet, savory scent; the garlic will become fragrant but should not brown. Softening these aromatics mellows sharp edges and creates sweetness that deepens the soup's profile. Avoid rushing this step, because undercooked onion can leave a raw, harsh edge; if you see browning, lower the heat and stir more frequently.
- Cover and set to 'Sealing'. Cook on manual high pressure for 10 minutes. Do an instant steam release.: When the broccoli and carrot join the pot, the color contrast is immediate, and the broth will glisten around the vegetables. Adding the chicken broth deglazes the base and captures any caramelized bits from the sauté, enriching flavor. Make sure the vegetables are submerged enough for even pressure cooking; a common oversight is overcrowding which can lead to uneven tenderness.
- In a small bowl, whisk the cornstarch with 1/4 cup of warm water.: The pot will build pressure and then cook the vegetables until tender yet still vibrant. During sealing you may hear clicks and hisses, which is normal as steam builds. This pressurized environment gently breaks down the vegetables, creating body in the soup. Avoid opening the valve early unless the recipe calls for it, because premature release can result in undercooked pieces.
- While stirring constantly, whisk the mixture back into the soup. Turn to 'Sauté' mode and cook until thickened, about 2 to 4 minutes.: As you vent, you will see a plume of steam and hear a rush; this rapid release stops cooking quickly so textures remain controlled. This technique prevents the broccoli from over softening into a mushy mass. A common mistake is placing your hand over the valve; always use a utensil and keep your face and hands away from the steam stream.
- Turn off the Instant Pot and stir in the cheese a little bit at a time until fully melted.: The slurry should be smooth and glossy with no visible clumps, and the warm water helps it dissolve evenly. This activation step readies the cornstarch to thicken without leaving gritty pockets. If you see lumps, push the mixture through a small sieve or whisk vigorously; adding it lumpy will create uneven texture when incorporated.
- Stir in the cream and season to taste with salt: As the slurry hits the hot liquid you will hear a soft bubbling and notice the soup beginning to coat the back of a spoon, indicating proper thickening. Constant stirring prevents localized gelatinization that causes lumps, and finishing on sauté evaporates excess liquid so the texture firms up. A trap here is turning the heat too high which can break down the cream; keep a moderate sauté and watch for a glossy sheen.
- Turn off the Instant Pot and stir in the cheese a little bit at a time until fully melted: As you add the cheddar in small handfuls, it will melt into smooth ribbons that deepen the soup's color and create a luxuriously creamy body. Adding cheese off heat or on minimal residual warmth prevents separation and graininess. A common mistake is dumping all the cheddar in at once which can lead to clumping and an oily finish; take your time and stir continuously.
- Stir in the cream and season to taste with salt: The whipping cream will meld into the surface, smoothing any sharpness and giving the soup a rich mouthfeel that clings to the spoon. Taste carefully because the chicken broth and cheddar already contain salt; add small increments of sea salt until flavors brighten without becoming salty. Over seasoning is easy to do here, so pause and taste after each tiny addition.
Notes
- Swap the broth thoughtfully: If you prefer a lighter base, try a low sodium chicken broth to control saltiness, which lets the sharpness of the cheddar shine without overpowering the bowl. Lower sodium broth is helpful if you are watching salt intake or plan to add more salty elements later.
- Adjust the broccoli texture: For more pronounced vegetable bite, cut the broccoli into slightly larger florets and reduce pressure time by a couple of minutes; conversely, cut smaller for a creamier body. This simple change lets you customize mouthfeel based on preference.
- Make it lighter: Substitute half the whipping cream with milk for a lighter finish that still retains creaminess. This reduces overall richness while keeping the soup satisfying for those who want fewer calories or a less heavy bowl.
- Boost flavor gently: Add a pinch of smoked paprika or a small amount of ground mustard to the cheddar addition for a subtle depth. These small flavor enhancers complement the cheese without masking the core broccoli and cheddar profile.
- Control thickness: If the soup sets up too thick after refrigeration, stir in a splash of warm chicken broth while reheating to restore a spoonable consistency. This prevents over diluting while ensuring a pleasant reheated texture.