Why You’ll Love This Broccoli Cheddar Soup Lightened Up
- It’s genuinely comforting without the heaviness. We achieve that classic creamy texture by building a flavorful roux with a touch of butter and flour, then slowly whisking in lighter milk. You get all the satisfaction of a rich soup, but it won’t leave you feeling like you need a nap afterward.
- The flavor is deep and complex, not just cheesy. We start by sautéing onions and garlic until they’re soft and sweet, which creates a fantastic flavor base. A dash of mustard powder and a pinch of nutmeg work in the background to make the cheddar taste even more cheddar-y, if that’s possible.
- It’s a one-pot wonder for easy cleanup. From sautéing the veggies to simmering the soup, everything happens in a single Dutch oven or heavy-bottomed pot. Less time washing dishes means more time enjoying your delicious creation.
- It’s incredibly versatile. This soup is a fantastic blank canvas. Feel like adding some diced potatoes for extra heartiness? Go for it. Want a bit of a kick? A dash of hot sauce or smoked paprika at the end is divine. It’s your soup, after all.
Ingredients & Tools
- 1 tbsp olive oil or unsalted butter
- 1 medium yellow onion, diced
- 2 cloves garlic, minced
- 1 tbsp all-purpose flour
- 3 cups low-sodium vegetable broth
- 2 cups 2% milk or whole milk
- 1 large head of broccoli, florets chopped, stalk peeled and diced
- 1 large carrot, grated
- 1/4 tsp dry mustard powder
- A pinch of freshly grated nutmeg
- 1 1/2 cups freshly grated sharp cheddar cheese
- Salt and black pepper to taste
Tools: A large Dutch oven or heavy-bottomed soup pot, a wooden spoon, a whisk, a standard box grater.
A quick note on the cheese—honestly, grating your own from a block makes a world of difference. Pre-shredded cheese contains anti-caking agents that can make your sauce a little grainy. Taking that extra minute to grate it fresh ensures a perfectly smooth, velvety melt.
Serves: 4 | Prep Time: 15 minutes | Cook Time: 25 minutes | Total Time: 40 minutes
Before You Start: Tips & Ingredient Notes
- Grate your own cheese. Seriously. I know I just mentioned it, but it’s the single most important tip for a silky soup. Pre-shredded cheese is convenient, but the starch coating prevents it from melting into a smooth emulsion. A block of extra-sharp cheddar grated just before use will transform your soup.
- Don’t toss that broccoli stalk! It’s packed with flavor and nutrients. Just use a vegetable peeler to remove the tough outer skin, then dice the tender interior. It adds a wonderful texture and ensures no part of the broccoli goes to waste.
- Why mustard powder and nutmeg? These might seem like odd additions, but they’re classic flavor enhancers for cheese sauces. The mustard powder adds a subtle tang that brightens the cheese, while the nutmeg provides a warm, earthy depth that’s just… chef’s kiss.
- Have all your ingredients prepped and ready. This recipe moves quickly once you start making the roux. Having your onions diced, broccoli chopped, and cheese grated before you turn on the heat will make the process smooth and stress-free.
How to Make Broccoli Cheddar Soup Lightened Up
Step 1: Start by heating the olive oil or butter in your Dutch oven over medium heat. Once it’s shimmering (or melted), add the diced onion. Sauté for about 5-7 minutes, stirring occasionally, until the onion becomes soft and translucent. You’ll notice the kitchen starting to smell amazing. Now, add the minced garlic and cook for just another minute until it’s fragrant—be careful not to let it burn!
Step 2: Sprinkle the tablespoon of flour over the onions and garlic. This is our roux! Stir constantly for about a minute to cook out the raw flour taste. The mixture will look pasty and clumpy, which is exactly what you want. This little coating of flour on the onions is the magic that will thicken our soup beautifully without needing cups of heavy cream.
Step 3: Now, slowly pour in the vegetable broth while whisking constantly. This is the key to avoiding lumps. Whisk, whisk, whisk until the flour and broth are completely combined and the mixture is smooth. Then, pour in the milk, add the dry mustard and nutmeg, and give it another good stir. Bring the liquid to a gentle simmer—you’ll see small bubbles forming around the edges of the pot.
Step 4: Add the chopped broccoli florets, the diced broccoli stalk, and the grated carrot to the pot. Stir everything together. The trick is to let this simmer for about 15-20 minutes, uncovered, until the broccoli is fork-tender. You want it soft but still vibrantly green, not mushy and dull.
Step 5: This is the most important part—tempering the cheese. Turn the heat down to the lowest possible setting. Gradually add the grated cheddar, a handful at a time, stirring continuously until each addition is fully melted before adding the next. If the soup is too hot, the cheese can separate and become oily. Low and slow is the way to go for a velvety result.
Step 6: Once all the cheese is melted in, taste the soup. Season generously with salt and freshly ground black pepper. The amount of salt needed will depend on your broth and cheese, so trust your palate. Let it heat through for another minute or two, and then it’s ready to serve. You’ll notice the soup has thickened to a perfect, creamy consistency.
Serving Suggestions
Complementary Dishes
- A thick slice of crusty sourdough bread — There’s nothing better for dipping into this cheesy, brothy goodness. The tangy sourdough provides a lovely contrast to the rich soup.
- A simple side salad with a sharp vinaigrette — A pile of crisp greens with a lemony or mustardy dressing cuts through the richness of the soup perfectly, making the whole meal feel balanced.
- A warm, soft pretzel — For the ultimate cozy pub-style experience, a soft, salty pretzel on the side is an absolute delight. It’s a fun and interactive way to enjoy every last drop.
Drinks
- A crisp, cold lager or pale ale — The carbonation and slight bitterness of a good beer are fantastic at cleansing the palate between cheesy, creamy bites.
- A glass of dry, unoaked Chardonnay — The bright acidity in the wine complements the richness of the cheddar without overpowering the delicate broccoli flavor.
- Sparkling water with a squeeze of lemon — A non-alcoholic option that does the same trick as the beer or wine, offering a refreshing, bubbly contrast.
Something Sweet
- A simple apple galette — The warm, slightly tart apples and flaky pastry are a classic, comforting end to a meal that feels both rustic and elegant.
- A small bowl of lemon sorbet — This is my go-to for a super light finish. The intense, clean citrus flavor is incredibly refreshing after the savory soup.
- Dark chocolate-covered almonds — Just a few of these provide a satisfying, not-too-sweet crunch that feels like a little treat without being overwhelming.
Top Mistakes to Avoid
- Mistake: Adding cheese to a boiling soup. High heat is the enemy of a smooth cheese sauce. It causes the proteins to tighten and squeeze out the fat, resulting in a greasy, grainy soup. Always turn the heat to low before you start adding the cheese.
- Mistake: Using pre-shredded cheese. I know, I’m a broken record, but it’s that important. The cellulose powder used to keep the shreds separate will prevent your soup from getting truly silky. A little extra grating effort pays off hugely in texture.
- Mistake: Overcooking the broccoli. You want the broccoli to be tender, but you also want it to retain its beautiful green color and a bit of texture. If you cook it into oblivion, it turns a sad army green and becomes mushy. Keep an eye on it during the simmer.
- Mistake: Not seasoning at the end. Broths and cheeses vary widely in saltiness. Tasting and adjusting the seasoning with salt and pepper right at the end, after the cheese has melted, is crucial for a perfectly balanced flavor.
Expert Tips
- Tip: For an extra velvety texture, use an immersion blender. Once the broccoli is tender, you can blend about half of the soup directly in the pot for a thicker, creamier base while still leaving some florets intact for texture. It’s the best of both worlds.
- Tip: Make it ahead for even better flavor. Soups are often even more delicious the next day as the flavors have time to meld. Let the soup cool completely, store it in an airtight container in the fridge, and gently reheat it on the stove over low heat, stirring often.
- Tip: Add a potato for a thicker, heartier version. If you’re in the mood for something even more substantial, dice one small Yukon Gold potato and add it with the broccoli. It will break down slightly and naturally thicken the soup.
- Tip: Boost the umami with a secret ingredient. A teaspoon of white miso paste or a dash of Worcestershire sauce (use a vegan version if needed) whisked in with the broth adds a incredible depth of savory flavor that people won’t be able to pinpoint but will absolutely love.
FAQs
Can I make this soup vegan?
You absolutely can! The method remains the same. Use olive oil instead of butter. For the broth, ensure it’s a vegan variety. Instead of milk, use an unsweetened, unflavored plant-based milk like oat or soy milk—they tend to be the creamiest. For the cheese, use a high-quality vegan cheddar shreds that are known for melting well. You might also add a tablespoon of nutritional yeast with the broth for an extra cheesy flavor boost.
How long will leftovers last in the fridge?
Stored in an airtight container, this soup will keep well for 3-4 days. Reheat it gently on the stovetop over low heat, stirring frequently. You may need to add a splash of broth or milk when reheating as it tends to thicken up in the fridge. I don’t recommend freezing this soup, as the dairy base can separate and become grainy upon thawing.
My soup turned out a bit thin. How can I thicken it?
No worries, this happens! The easiest fix is to make a quick slurry. Mix one tablespoon of cornstarch with two tablespoons of cold water or broth until smooth. Stir this into your simmering soup and let it cook for a minute or two until it thickens. Alternatively, you can use that immersion blender trick to puree some of the broccoli, which will naturally thicken the soup.
Can I use frozen broccoli instead of fresh?
Yes, frozen broccoli works in a pinch! There’s no need to thaw it. Just add the frozen florets directly to the pot. You might need to add a minute or two to the simmering time to ensure they are fully heated through and tender. The texture might be slightly softer than fresh, but the flavor will still be great.
What’s the best way to reheat this soup without it breaking?
The key is low and slow. Reheat it on the stovetop over low heat, stirring often. Avoid the microwave if you can, as it heats unevenly and can easily cause the dairy to separate. If the soup does look a little grainy or oily after reheating, a vigorous whisking can often bring it back together.
Broccoli Cheddar Soup Lightened Up
Craving cozy broccoli cheddar soup without the guilt? My lightened-up recipe uses a smart roux & fresh ingredients for all the creamy, cheesy flavor in under 40 minutes!
Ingredients
Ingredients
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1 tbsp olive oil or unsalted butter
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1 medium yellow onion (diced)
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2 cloves garlic (minced)
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1 tbsp all-purpose flour
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3 cups low-sodium vegetable broth
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2 cups 2% milk or whole milk
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1 large head of broccoli (florets chopped, stalk peeled and diced)
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1 large carrot (grated)
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1/4 tsp dry mustard powder
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A pinch freshly grated nutmeg
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1 1/2 cups freshly grated sharp cheddar cheese
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Salt and black pepper (to taste)
Instructions
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Start by heating the olive oil or butter in your Dutch oven over medium heat. Once it's shimmering (or melted), add the diced onion. Sauté for about 5-7 minutes, stirring occasionally, until the onion becomes soft and translucent. You'll notice the kitchen starting to smell amazing. Now, add the minced garlic and cook for just another minute until it's fragrant—be careful not to let it burn!01
-
Sprinkle the tablespoon of flour over the onions and garlic. This is our roux! Stir constantly for about a minute to cook out the raw flour taste. The mixture will look pasty and clumpy, which is exactly what you want. This little coating of flour on the onions is the magic that will thicken our soup beautifully without needing cups of heavy cream.02
-
Now, slowly pour in the vegetable broth while whisking constantly. This is the key to avoiding lumps. Whisk, whisk, whisk until the flour and broth are completely combined and the mixture is smooth. Then, pour in the milk, add the dry mustard and nutmeg, and give it another good stir. Bring the liquid to a gentle simmer—you'll see small bubbles forming around the edges of the pot.03
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Add the chopped broccoli florets, the diced broccoli stalk, and the grated carrot to the pot. Stir everything together. The trick is to let this simmer for about 15-20 minutes, uncovered, until the broccoli is fork-tender. You want it soft but still vibrantly green, not mushy and dull.04
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This is the most important part—tempering the cheese. Turn the heat down to the lowest possible setting. Gradually add the grated cheddar, a handful at a time, stirring continuously until each addition is fully melted before adding the next. If the soup is too hot, the cheese can separate and become oily. Low and slow is the way to go for a velvety result.05
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Once all the cheese is melted in, taste the soup. Season generously with salt and freshly ground black pepper. The amount of salt needed will depend on your broth and cheese, so trust your palate. Let it heat through for another minute or two, and then it's ready to serve. You'll notice the soup has thickened to a perfect, creamy consistency.06


