Soups & Stews
Alton Brown's cream of mushroom soup delivers restaurant-quality depth with a velvety texture that's impossible to resist. The secret lies in proper mushroom preparation and a classic roux technique that creates a smooth, rich base.
I've perfected this version through years of testing, ensuring every spoonful delivers that perfect balance of umami and creaminess.
What sets this recipe apart is the attention to detail—sautéing mushrooms until deeply caramelized, creating a proper roux without burning, and blending the final soup to achieve that signature silky texture. The result is a soup that's rich enough for a cozy dinner yet light enough for lunch.
This isn't just another cream soup; it's a velvety masterpiece that tastes like it came from a professional kitchen.
The process is straightforward once you understand the key techniques, but the results are anything but ordinary. You'll end up with a soup that's perfectly balanced—deep mushroom flavor without bitterness, a velvety texture that coats every spoonful, and just the right amount of creaminess.
The aroma alone will have everyone gathering around the table.
This recipe works equally well as a starter or main course, especially when paired with crusty bread or grilled cheese. The techniques you'll learn here—proper roux-making, mushroom caramelization, and blending—will elevate all your future soups. Let's get started on creating this velvety masterpiece.
Ingredients for alton brown cream of mushroom soup
Sixteen ingredients for a soup that tastes like it came from a Michelin-starred kitchen.
| Ingredient | Amount | Notes |
|---|---|---|
| White Button Mushrooms 🍄 | 1 ½ lb | Sliced thin for even cooking |
| Yellow Onion 🧅 | 1 whole | Medium size, diced small |
| Garlic Cloves 🧄 | 4 cloves | Minced for aromatic depth |
| Unsalted Butter 🧈 | 6 tbsp | Cold for proper roux |
| All-Purpose Flour 🌾 | ⅓ cup | Sifted for smooth texture |
| Heavy Cream 🥛 | 1 cup | Full-fat for richness |
| Whole Milk 🥛 | 1 ½ cups | Warmed for blending |
| Chicken Broth 💧 | 3 cups | Low-sodium preferred |
| Dried Thyme 🌿 | 1 tsp | Or 1 tbsp fresh |
| Salt 🧂 | 1 ½ tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ½ tsp | Freshly ground preferred |
| Worcestershire Sauce 🍯 | 1 tbsp | For umami depth |
| Dijon Mustard 🍯 | 1 tsp | Adds subtle tang |
| Chives 🌿 | 2 tbsp | Chopped for garnish |
The mushrooms are non-negotiable here—cremini or baby bella add more depth than white buttons, but if that's what you've got, slice them extra thin. I always grab mine from Whole Foods when they're on sale, but the regular grocery store stuff works fine if they're firm and fresh. The key is to caramelize them until they're golden and deeply flavorful—don't rush this step. For the butter, Plugrá is my go-to (it's European-style and has a higher smoke point), but any good-quality unsalted butter will do. Just make sure it's cold when you start making the roux—room temperature butter burns too easily.
No chicken broth? Vegetable broth works just as well, though the flavor will be slightly different. Running low on heavy cream? Half-and-half with an extra splash of milk keeps the richness without being too heavy. The Worcestershire sauce is where the umami magic happens—if you don't have it, a dash of soy sauce or fish sauce (trust me on this) adds that savory punch. Fresh thyme is ideal, but dried works at one-third the amount. Pro tip: Toast your flour and thyme together in the butter for about 30 seconds before adding the broth—this deepens the flavor base. And if you're feeling fancy, a splash of white wine (about 2 tbsp) deglazes the pan beautifully after caramelizing the mushrooms.
This soup tastes even better the next day—make a double batch if you can. It keeps in the fridge for 5 days, though I usually freeze half for lazy weeknights. For freezing, let it cool completely first, then portion into airtight containers. The texture holds up perfectly when reheated gently. Garnish with those chopped chives right before serving—they add a bright, fresh finish that cuts through the richness. Leftovers? Perfect for grilled cheese or as a base for mushroom melt sandwiches. Trust me, you'll want to make this at least once a week.
Why You'll Love This Recipe
- The secret’s in the roux: butter, flour, and a slow simmer that turns into something velvety without heavy cream. Honestly, the first time I made it, I thought I’d overcooked it—until I tasted that umami depth. Now I double the batch.
- No Chopping Nightmare: I swear by this recipe because the mushrooms and onions barely need prep—just a quick slice, not even a dice. That butter-sautéed garlic alone makes the whole thing smell like a restaurant kitchen, and I’m not exaggerating.
- Rich Without the Fuss: The secret’s in the roux: butter, flour, and a slow simmer that turns into something velvety without heavy cream. Honestly, the first time I made it, I thought I’d overcooked it—until I tasted that umami depth. Now I double the batch.
- Weeknight to Potluck: This soup’s my go-to for lazy nights and holiday gatherings. Toss it with pasta for a creamy dinner, or serve it chilled with crusty bread for a picnic. My roommates still joke about how I “invented” the perfect crowd-pleaser—no one ever leaves a bowl untouched.
Step-by-step instructions for Alton brown's cream of mushroom soup
This velvety soup delivers restaurant-quality richness with just a few key techniques.
Sauté Mushrooms and Aromatics Until Golden
Heat 4 tablespoons of the unsalted butter in a large pot over medium heat. Add the 1.5 lb white button mushrooms sliced thin and cook for 8-10 minutes until they release their moisture and turn golden. Stir occasionally to prevent sticking.
Add the diced yellow onion and cook for another 5 minutes until softened. Stir in the minced garlic cloves and cook for 30 seconds until fragrant. This step builds the umami foundation—don't rush it. The mushrooms should be tender but still hold their shape slightly, with a deep golden color from caramelization.
Build the Roux for Thickening Power
Reduce heat to medium-low and add the remaining 2 tablespoons unsalted butter. Stir in the ⅓ cup all-purpose flour all at once, whisking constantly for 2-3 minutes until the mixture turns a rich, nutty brown color. This roux is your secret weapon for that velvety texture.
I like to keep the heat low here—too hot and you'll burn the flour before it fully cooks. You'll know it's ready when it smells toasty and coats the back of a spoon smoothly. If it looks too dry, add 1 tablespoon of the chicken broth to help it come together.
Slowly Incorporate Liquids for Smooth Texture
Gradually whisk in the 3 cups chicken broth, 1.5 cups whole milk, and 1 cup heavy cream one ladle at a time, allowing each addition to fully incorporate before adding more. This slow process prevents lumps and creates that signature silky consistency.
Bring the mixture to a gentle simmer over medium heat, then reduce to low heat and let it cook uncovered for 15 minutes, stirring occasionally. The soup should thicken noticeably as it simmers. If it gets too thick too soon, add 1-2 tablespoons of water or milk to reach your desired consistency.
Season and Finish with Umami Depth
Stir in the 1 tsp dried thyme, 1.5 tsp salt, ½ tsp black pepper, 1 tbsp Worcestershire sauce, and 1 tsp Dijon mustard. Let the soup simmer for another 5 minutes to allow the flavors to meld together. Taste and adjust seasoning—this is where the magic happens.
For extra richness, you can stir in a splash more heavy cream if needed. The soup should be velvety but still pourable. If you prefer a lighter texture, add more whole milk or chicken broth to thin it out. Here's the thing—this soup tastes even better the next day as the flavors deepen.
Garnish and Serve Warm
Ladle the soup into bowls and garnish each serving with 2 tablespoons chopped chives. The bright green color contrasts beautifully with the creamy soup and adds a fresh finish. Serve immediately with crusty bread or over a bed of buttered egg noodles.
This soup makes 6 generous servings, so it's perfect for meal prep. Store leftovers in an airtight container in the refrigerator for up to 5 days or freeze for up to 3 months. When reheating, warm gently on the stove over low heat and add a splash of milk or cream to restore its creamy texture if needed.
Pro Tips For Making Alton Brown Cream Of Mushroom Soup
- COOK MUSHROOMS LOW AND SLOW: I learned this the hard way—blistering mushrooms in butter just makes them bitter and watery. For Alton’s recipe, keep the heat at a gentle simmer (medium-low) until they’re fully broken down—about 10-12 minutes. You’ll end up with a rich, velvety base instead of a sad, slimy mess.
- SLICE ONIONS THIN AND EVEN: Uneven onion bits mean uneven cooking. For this soup, dice the yellow onion into paper-thin, consistent slices—about 1/8-inch thick. They’ll soften faster and sweeten properly, blending seamlessly into the roux without any grainy texture.
- WHISK THE ROUX CONSTANTLY: The moment you add flour to butter, start whisking like your life depends on it. I used to let mine sit for even 30 seconds, and it’d turn to glue. Keep that roux moving for 2-3 minutes until it’s a smooth, nutty paste—no lumps, no burning. (Yes, even if you’re impatient like me.)
- STRAIN THE MUSHROOM BROTH: This isn’t the prettiest method, but it’s the tastiest. After simmering mushrooms in broth, strain out the solids through a fine-mesh sieve. It removes the gummy bits that can make the soup cloying, leaving you with a silky, restaurant-quality texture. (Your future self will thank you.)
Regional styles of this alton brown cream of mushroom soup
Classic French Velouté
This French-inspired version swaps the roux for a white stock reduction—simmer 3 cups chicken stock until reduced by half, then blend with 1 cup heavy cream and 1 cup whole milk. The key difference?
No flour means a lighter texture with more pronounced mushroom flavor. I like to finish with a sprinkle of nutmeg and a drizzle of truffle oil for that Parisian bistro touch. 🌟
Southern Comfort Style
For a Southern twist, add ½ cup cooked smoked bacon (crumbled) and 1 diced celery stalk to the sautéed mushrooms. Use ½ cup whole milk and ½ cup heavy cream, then stir in 1 tsp hot sauce (like Crystal) and ½ tsp smoked paprika at the end.
Serve with cornbread for the ultimate comfort food combo. The smoky depth elevates the umami in a whole new way. 🔥
Italian Creamy Risotto Fusion
Blend this soup with 1 cup Arborio rice (cooked until creamy) for an instant risotto-style soup. Add ½ cup grated Parmesan, 1 tbsp dried parsley, and a splash of white wine during the roux step.
Top with sun-dried tomatoes and balsamic glaze for a Tuscan-inspired twist. The risotto adds body while keeping the creamy texture intact. Perfect for chilly evenings! ✨
Vegetarian Vegan Adaptation
Swap the butter for olive oil, use vegetable broth instead of chicken, and replace heavy cream with full-fat coconut milk. For umami depth, add 1 tbsp soy sauce and 1 tsp miso paste during the roux step.
Garnish with toasted pine nuts and fresh basil for a vibrant, plant-based version that still delivers rich flavor. 🌱
Spicy Thai-Inspired Twist
Add 1 tbsp red curry paste (like Maesri) with the mushrooms, then stir in 1 cup coconut milk at the end. Finish with 1 tsp fish sauce, ½ tsp lime zest, and a pinch of chili flakes.
The heat and exotic flavors transform this into a comforting yet exciting bowl. Serve with jasmine rice for a full meal. 🌶️
Nutrition facts
Frequently asked questions
Can I make this soup without a roux?
You can create a lighter version by blending the cooked mushrooms with the broth before adding dairy. For a French-style velouté, reduce the broth first, then blend with cream and milk. The texture will be smoother but slightly less rich than the roux-based version.
Why does my soup taste bitter?
Overcooking the mushrooms or burning the roux causes bitterness. Always sauté mushrooms on medium heat until golden (not blackened) and whisk the roux constantly to prevent burning. A splash of cream or a pinch of sugar can balance harsh flavors if needed.
Can I use instant potato flakes instead of a roux?
Yes! For a quick version, stir in 2 tablespoons instant potato flakes with the broth and let it thicken for 5 minutes before adding dairy. The texture will be slightly different but still creamy. This works well for weeknight meals when you're short on time.
How do I make this soup dairy-free?
Replace butter with olive oil, use coconut milk instead of heavy cream, and thicken with cornstarch slurry. Add nutritional yeast for that cheesy depth. The flavor will be different but still rich and satisfying. For extra umami, stir in 1 tbsp soy sauce during cooking.
Can I add meat to this recipe?
Brown ½ lb ground pork or bacon first, then remove it and add back at the end. For a heartier version, stir in ½ cup cooked chicken or sausage when seasoning. The meat adds protein and deepens the savory profile. Perfect for a cozy winter meal.