Serve Steak With The Mushrooms Sauce And Garlic Roasted Potatoes.

Cook until butter melts, about 2 minutes. Preheat the oven to 400°f. Set aside and cover with aluminum foil.

When Oil Is Hot, Add Onions.

In the same pan you’ve used to cook your steaks, melt the butter slowly over a medium heat. Sauté on medium heat for 30 seconds until fragrant. Pour into the skillet and stir in thyme sprigs and pepper;

Combine Beef Stock, Wine, And Worcestershire Sauce In A Small Measuring Cup.

Preheat the oven to 200°c/ 180°c fan/gas mark 6/400°f. Reduce heat to low and simmer, uncovered, until everything is really soft, 15 to 20 minutes. Cook for 20 minutes, or until the garlicky, buttery juices are oozing and mingling with the black.

How To Make Grilled Portobello Mushroom Steaks.

Slowly and gradually add in the beef broth (or stock), while stirring. Add the vinegar and mushrooms and cook until soft, then add the cream. Deglaze the pan with the cream and stock, and simmer, stirring occasionally until the sauce has reduced by half.

In The Same Skillet, Saute Mushrooms Until Tender.

In the same pan, add 1 tbsp of olive oil and sauté the fresh garlic for about 30 seconds. Reduce heat and simmer, uncovered, until liquid has reduced and sauce is slightly thickened, about 15 minutes. When hot, add mushrooms and onion into the pan;