Portobello Port Sauce for Steak

Portobello Port Sauce for Steak


"Portobello mushrooms and port wine sauteed with sour cream and butter, to be served over pan grilled beef fillets or tenderloin. You can start this in the pan the steak was cooked in, and incorporate the steak drippings into the sauce."


15 m servings
Serving size has been adjusted!

Original recipe yields 4 servings


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  1. Heat butter in a large heavy skillet over medium-high heat. Saute mushrooms until soft and lightly browned, about 2 minutes. Stir in port wine, and let simmer for 2 minutes; remove from heat. In a small bowl, mix together sour cream and cornstarch. Stir into mushroom mixture until smooth. Return to heat, and stir until thickened and smooth. Season to taste with salt and pepper.
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  1. 25 Ratings


Kind of a sweet sauce, but great! Really good on steak! Thanks for the recipe!

This recipe was wonderful - very french gourmet. I added sliced onion and doubled the recipe. I did add more sour cream at the end because I thought the wine was overpowering. Next time I'll ...

Very Good! Used dehyrated portobello mushrooms (re-hydrated), substituted the sour cream for half & half cream and added shallots. Worth doubling the liquids next time to make it more saucy.

Absolutely delicious! I used 1/4 cup red wine, 1/4 cup soy sauce & 1/4 cup water, then added onions & water chestnuts...I, too, seared steak, then broiled in oven. Very juicy! My kids were ea...

Per other reviewer suggestions, I used 1/3 cup port, 1/3 cup water, and 1 TBSP soy sauce. This sauce is a keeper!

I had high hopes for this recipe and I was very disappointed. My husband didn't like it either. The color was a real turnoff.

This wasn't my favorite, it was too sweet for my liking. I've only had port wine in cheese so I am to blame on that issue. Maybe I'll try it with Merlot. Thanks any way :)

Way too sweet. Covered up the steak completely.

WOW! This sauce is great!! Restaurant quality and totally company-worthy. Being a mushroom lover, I used a whole 10 oz. package of mushrooms so the steaks were smothered with them. Delish--b...