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Rich creamy mushroom steak sauce poured over seared steak with a golden spoon

Rich Creamy Mushroom Steak Sauce

Love Gratitude Joy
A rich, velvety, keto-friendly mushroom steak sauce inspired by classic Steak Diane — with Dijon, Worcestershire, beef stock, and a glossy cold-butter finish. Ready in 10 minutes and perfect for any cut of steak.
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Prep Time 2 minutes
Cook Time 8 minutes
Total Time 10 minutes
Course Sauce
Cuisine American
Servings 4 servings
Calories 165 kcal

Equipment

  • 1 Skillet
  • 1 Wooden spoon or silicone spatula
  • 1 Chef’s knife
  • 1 Cutting board
  • 1 Small whisk

Ingredients
  

Mushroom Base

  • 90 g finely diced mushrooms
  • 1.5 tbsp butter for sautéing
  • 1 tbsp avocado oil
  • 1 small shallot finely minced
  • 1 clove garlic minced

Sauce

  • ¾ cup heavy cream
  • ½ tbsp butter added to sauce
  • ⅛ tsp salt
  • ⅛ tsp black pepper
  • 1 –2 tsp Worcestershire sauce to taste
  • Optional: small pinch paprika for color

Instructions
 

  • Sauté the mushrooms.
  • Heat 1 tbsp avocado oil in a skillet over medium heat. Add the 90 g finely diced mushrooms and cook 5–6 minutes until they release moisture and begin to brown.
  • Add aromatics.
  • Stir in the 1 clove garlic and cook 30 seconds until fragrant.
  • Deglaze the pan.
  • Pour in the 1 –2 tsp Worcestershire sauce (or optional splash of white wine) and scrape up the fond with a wooden spoon.
  • Build the sauce.
  • Reduce heat to low. Add the ½ tbsp butter and let it melt into the mushrooms. Stir in the ¾ cup heavy cream and whisk gently until smooth.
  • Season.
  • Add ⅛ tsp salt, ⅛ tsp black pepper, and optional paprika for color. Simmer 3–4 minutes until slightly thickened and glossy.
  • Finish + serve.
  • Taste and adjust seasoning. Spoon over grilled or pan-seared steak.
  • (Leftovers reheat beautifully with a splash of cream.)

Notes

• Mushroom swap: We used to reach for baby bellas, but after testing side-by-side, we now prefer white mushrooms — they’re milder, less bitter, and let the sauce stay silky and balanced.  Use any mushroom you love.
• Don’t skip the browning. Let the mushrooms get a little color — that’s where the steakhouse flavor develops.
• Thin or thicken as needed. Add a splash of cream to loosen, or simmer longer for a richer, clingy sauce.
• Make it ahead. This sauce reheats beautifully on low; add a touch of cream to refresh.
• Perfect pairings. Spoon over ribeyes, filets, pork chops, roasted chicken or even omelets.
• Optional touch. A tiny pinch of paprika adds color without changing flavor.

Nutrition

Serving: 2ozCalories: 165kcalCarbohydrates: 2gProtein: 1gFat: 16g
Keyword creamy mushroom steak sauce, keto diane sauce, keto steak sauce, low carb sauce, steak diane, keto sauce for chicken, keto sauce for pork, keto egg sauce, low carb steak sauce
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