Throw out the can of Campbell’s and try our keto cream of mushroom soup instead. Ours is made with fresh mushrooms and thickened with cream. Eat it as-is, include it in meals like keto green bean casserole, or use it to top grilled chicken drumsticks or air fryer ribeye steak.
What You Need to Make this Recipe
- Butter: Saute the onions in butter and add richness.
- Onion: I use yellow onion to sweeten the soup.
- Garlic: I suggest using four cloves, but don’t let my recipe tell you how much garlic to use – measure with your heart.
- Mushrooms: Feel free to use what you have on hand. I often use white or baby Bella mushrooms.
- Spices: Season the dish with dried thyme, kosher salt, and black pepper.
- Xanthan Gum: Use Xanthan to thicken the cream of mushroom soup and give it the perfect texture.
- Beef Broth: Use beef broth as the base for the soup.
- Sherry: I like to add a little sherry cooking wine to brighten the flavor of the beef broth.
- Heavy Cream: Give the soup a creamy consistency by stirring in heavy cream at the very end. You can also use half and half, but it might be too thin. For a non-dairy alternative, use coconut cream or full-fat coconut milk.
How to Make Keto Cream of Mushroom Soup
The full recipe with measurements is in the recipe card below.
Step 1: Warm butter in a saute pan over medium heat. Add onions and saute until they become translucent and soften. Then, stir in the garlic and cook for another minute.
Step 2: Add the mushrooms and cook for 5 minutes. Stir in xanthan gum and season with dried thyme, salt, and pepper.
Step 3: Deglaze with sherry cooking wine and beef broth; reduce to low-medium heat, cover, and cook for 10 minutes until the soup thickens.
Uncover and remove the soup from heat; stir in the heavy cream to finish.
Expert Tips
- I prefer thick and creamy cream of mushroom soup. However, if you don’t like the chunkiness of the mushrooms, use an immersion blender to smooth them out.
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Serving Suggestions
- Sides: Keto Green Bean Casserole, Stuffing
- Entrees: Pork Chops, Air Fryer Ribeye Steak, Bison Steak Recipe, Lamb Shoulder Chop, Grilled Chicken Drumsticks, Tandoori Turkey
What to do With the Leftovers
- Refrigerate – Store the leftovers in an airtight container. The soup will keep for 3 to 4 days in the fridge.
- Freeze – Let the dish cool completely. Then, transfer it to a freezer-safe container or bag. Keto cream of mushroom soup freezes for three months.
- Thaw – Defrost the soup in the refrigerator overnight.
- Reheat – Warm leftovers on the stovetop or microwave, and enjoy!
Frequently Asked Questions
Is condensed cream of mushroom soup keto?
The store-bought canned versions contain flour and cornstarch that add carbs to the soup.
How to thicken keto cream of mushroom soup?
I use xanthan gum to thicken the soup, but you can also use arrowroot flour or coconut flour.
Are mushrooms keto?
Mushrooms are a great low-carb vegetable! One serving (one cup) of raw white mushrooms are 1 net carb.
More Fall Recipes:
Keto Cream of Mushroom Soup
- 4 tablespoons butter
- 1 white onion, diced
- 4 cloves garlic, minced
- 1½ pounds mushrooms, sliced
- 4 teaspoons thyme, dried
- 1 teaspoon kosher salt
- 1 teaspoon black pepper, coarse ground
- ½ teaspoon xanthan gum
- 4¼ cups beef broth
- 2 tablespoons sherry cooking wine
- 1 cup heavy cream
- Warm butter in a saute pan over medium heat. Add onions and saute until they become translucent and soften. Then, stir in the garlic and cook for another minute.
- Add the mushrooms and cook for 5 minutes. Stir in xanthan gum and season with dried thyme, salt, and pepper.
- Deglaze with sherry cooking wine and beef broth; reduce to low-medium heat, cover, and cook for 10 minutes until the soup thickens.
- Uncover and remove the soup from heat; stir in the heavy cream to finish.
- I prefer thick and creamy cream of mushroom soup. However, if you don’t like the chunkiness of the mushrooms, use an immersion blender to smooth them out.
- The nutritional information shown is an estimate provided by an online nutrition calculator. It should not be considered a substitute for professional advice.