There is nothing better than a simple steak with a creamy keto mushroom sauce that can be made in 5 minutes.

This creamy indulgent steak sauce can be used for a variety of meals, so keep this recipe on hand, print it out, or even memorise it. Whatever you do, make it. You will be fighting over the leftovers (if there are any).

steak sliced on a plate with mushroom sauce
What to serve with the perfect steak? A creamy keto mushroom sauce.
Photo credit: Lenkas_lens as featured on Diet Doctor

This sauce is also perfect to be served with chicken dinners, beef recipes, pork dinners, with keto pasta, and pork chops.

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You only need 5 simple ingredients to make this creamy mushroom sauce. And you can make plenty of variations and substitutions.

All quantities are in the recipe card below.

  • butter – this gives the best flavour. You can use salted or unsalted butter. Remember to season to your liking accordingly.
  • Garlic – fresh crushed garlic tastes better than dried garlic flakes, but you can use either.
  • Mushrooms – fresh, raw, peeled, and sliced. Do not use dried mushrooms that have been rehydrated, they will make the sauce too watery.
  • Cream cheese – use the full-fat variety. The lite, light, or spreadable won’t make a very creamy thick sauce.
  • Double/heavy cream – you can adjust how much you add to the sauce. If you wish to have a more pourable sauce, add an extra tablespoon or two at a time. If you wish to have a thicker sauce, only use half the stated quantity.

How to cook the perfect steak

To cook the perfect steak bring the raw steak to room temperature for at least 20 minutes before you are going to cook it. Do NOT oil the pan, but instead, brush both sides of the steak with oil and season with salt and pepper.

Preheat your frying pan, skillet, or griddle to high heat. Set your kitchen timer and cook your steak on high for the recommended time on each side.

These cooking times are approximate and you may vary the time depending on the thickness of your steak. Always allow your steak to rest before serving.

1.5cm (0.6 inch) steak cooking times.

  • Rare: 1-1.5 minutes on each side
  • Medium: 2-3 minutes on each side
  • Well done: 3-4 minutes on each side

2-3cm (1 inch) steak cooking times.

  • Rare: 2-3 minutes on each side
  • Medium: 4-5 minutes on each side
  • Well done: 5-6 minutes on each side

Source: Taste

How to make it?

After you have cooked your steak, remove it from the frying or skillet and keep covered on a plate until it is time to serve. Using the same frying pan melt the butter and cook the crushed garlic and sliced fresh mushrooms until cooked and tender.

Add the cream cheese and stir while it’s melting so to avoid any lumps in your creamy keto sauce. Add heavy cream/double cream until you get the desired thickness of the sauce.

You can create a thick sauce, or add extra cream t make it a pourable sauce.

How to store it?

I never have leftovers, but if you do, store them in an airtight container in the fridge for up to 3 days. I prefer to use a glass container so the garlic does not impart onto a plastic container which is difficult to remove.

The mushroom sauce can be frozen in ice cube trays for quick and easy individual servings. Once frozen in ice cube trays, remove and place in a ziplock bag for up to 3 months

How to serve it?

Creamy mushroom sauce is incredible when poured over steak, stuffed chicken, pork chops, keto meatballs, or vegetable side dishes. The sauce can also be used cold as a mushroom dip with Fat Head crackers.

Recipe FAQ

How do I reheat the sauce?

Reheat gently in a frying pan. Don’t use high heat otherwise you risk the sauce will separate and split. Do not microwave the sauce to reheat.

Are mushrooms keto?

Yes, mushrooms only have 1.6g net carbs in an entire cup of sliced mushrooms so they are perfect for your ketogenic diet. You can eat them raw or cooked and even baked mushrooms stuffed with cheese.

Which mushrooms are best for the sauce?

The recipe uses traditional standard white mushrooms, however, you can also use portobello, shiitake, porcini, pine, or oyster.

How can I reduce the fat?

You can replace half the cream with vegetable stock or beef stock to dilute the creamy sauce to lower the fat and lower the calories.

More keto sauces

If you love creamy mushroom sauce, these other keto sauce recipes are perfect to be served with a pan fried steak.

steak sliced on a plate with mushroom sauce

Creamy Keto Mushroom Sauce Recipe

What to serve with the perfect steak? A creamy keto mushroom sauce that's ready in less than 5 min. Perfect for winter dinners or BBQ season.
4.65 from 28 votes
Print Pin Rate
Course: Dinner, Sauces
Cuisine: Egg free, Gluten Free, Grain free, Keto, LCHF, Low Carb, No Sugars, Wheat Free
Keyword: keto mushroom sauce, Low-carb sauce
Cook Time: 5 minutes
Total Time: 15 minutes
Servings: 5
Calories: 151.8kcal
Author: Thinlicious.com
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  • Frying pan


Low Carb Mushroom Sauce

  • 25 g butter
  • 2 cloves garlic minced crushed
  • 100 g mushrooms peeled and sliced
  • 100 g cream cheese
  • 60 ml heavy whipping cream


  • Melt the butter in a saucepan on medium-high heat and fry the garlic and mushroom slices until gently cooked (this will only take 2 or 3 minutes).
  • Turn the heat down to medium and add the cream cheese, mixing to avoid any lumps.
  • Now add the double cream and stir until heated through.


Serving: 1serve ( serves 5)Calories: 151.8kcalCarbohydrates: 2.2gProtein: 2.2gFat: 15.4gSodium: 105.7mgPotassium: 106.2mgFiber: 0.2gSugar: 1.1gVitamin A: 570.1IUVitamin C: 0.9mgCalcium: 31.4mgIron: 0.2mg

You know by now my motto is “Real Food, Real Easy” and what can be more simple than a steak cooked to perfection. For a quick and easy family meal, buy a bag of salad and you can have the most amazing meal ready in minutes. Now that’s what I call fast food low-carb keto style.

Leave a comment with your favourite low-carb fast food.

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Recipe Rating


  1. @ukmikesmith says:

    Looks yummy but that would be a starter in our house 😉

  2. Yes! And…. add some fresh thyme & 3 T white wine while you saute the garlic. Proceed as above ? spool yummy…

  3. Incredibly easy and delicious mushroom sauce. I’ve been missing sauce/gravy on my steak quite a bit and have been substituting by topping a fried egg on top instead. This sauce is a great alternative and is almost as quick and easy as frying the egg. Plus you have extra to go in the fridge for more uses. I used thickened cream instead of double cream since it’s cheaper and doesn’t go off anywhere near as quickly. I’ve found little difference in flavour between the two types of cream so I usually go with the thickened.

  4. Sauté mushrooms in butter, add Worcestershire sauce and sour cream. Heat until warm serve on steak.

  5. Denise Farr says:

    I made this mushroom sauce tonight… devine! I doubled the amount of mushrooms as I love mushrooms, will definitely make again.

  6. Sylvia Gomez says:

    What is considered a serving for this sauce?

  7. Awesome sauce, I’ve used it with butterfly chicken breast with soya cream instead.. oh and I popped in a handful of spinach.. thanks, just wish I could post a pic of my version too 🙂

  8. Robert Loye says:

    Low carb is great especially for diabetics; however, diabetics are at big risk for cardio vascular and heart problems. Those problems require the consumption of less fat, especially saturated fat. Do you have any ideas for low carb and low fat sauces?

    In addition, I did not see a portion size under the Nutrition Facts section.

    1. Yes those with diabetes (T1 and T2) are at more risk for heart disease because of the inflammation and vascular events that occur through chronic high blood sugars, not through the consumption of fat. Even the World Heart Federation president says fats are protective, carbs are harmful, you can read more here. You may also want to read the cholesterol myth too. There is so much old and outdated science out there yet the guidelines havent changed.

  9. 5 stars
    This sauce changed the game for me. Not only is it good on steak but really good on everything! It is rich so I’d be weary and have a portion on the plate as to not over indulge. Super easy to make and is just divine! Will be making this all the time! Thank you 🙂

  10. Is this recipe hidden? I can’t seem to find it.