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Keto Mushroom Sauce

This creamy keto mushroom sauce with garlic and butter is silky, rich and bursting with flavor! The perfect side dish for a keto & low-carb steak dinner!

Prep Time
5 mins
Cook Time
5 mins
Total Time
20 mins
Servings: 4 servings
Calories: 338 kcal
Course: Side Dish
Cuisine: European , American

Ingredients

  • 3 3 tablespoons butter divided
  • 1 1 small onion finely chopped
  • 3 to 4 3 to 4 garlic cloves minced
  • 16 16 ounces white button mushrooms sliced
  • ¾ ¾ teaspoon salt
  • 1 1 teaspoon ground black pepper
  • 2 2 teaspoons mustard powder or 1 tablespoon Dijon mustard
  • 2 2 teaspoons dried thyme
  • 1 1 cup heavy cream

Instructions

    Cup of Yum
  1. Heat up a large skillet with half the amount of butter, add the chopped onions and sauté in medium heat until translucent.
  2. Add the garlic, and cook until golden.
  3. Add the remaining butter, and when it's melted, the mushrooms, salt, black pepper and mustard. Bring heat to low.
  4. Cook mushrooms until soft - about 5 to 7 minutes. They will release water, and absorb flavor.
  5. Add heavy cream and thyme and simmer, stirring regularly, for about 5 minutes until the sauce thickens.
  6. Adjust spices to taste before serving.

Notes

  • Serve creamy mushroom sauce spooned over steaks or other protein, like chicken breasts or roasted turkey. It's also great with grilled, steamed or air fried vegetables.
  • See post for instructions on choosing the best mushrooms and making it ahead/reheating.

Nutrition Information

Serving 4 Calories 338kcal (17%) Carbohydrates 6.9g (2%) Protein 5.2g (10%) Fat 32g (49%) Fiber 1.4g (6%) Sugar 4.7g (9%) Net Carbohydrates 5.5g

Nutrition Facts

Serving: 4servings

Amount Per Serving

Calories 338

% Daily Value*

Serving 4
Calories 338kcal 17%
Carbohydrates 6.9g 2%
Protein 5.2g 10%
Fat 32g 49%
Fiber 1.4g 6%
Sugar 4.7g 9%
Net Carbohydrates 5.5g

* Percent Daily Values are based on a 2,000 calorie diet.