Pan-Seared Rib-Eye with Mushroom-Hunter's Sauce

A rib-eye steak is one of my favorites!  Add a mushroom sauce and I am 100% in.  

2 Tbsp olive oil

1 1/2 lb boneless rib-eye steak

2 tsp kosher salt

1 tsp black pepper

4 Tbsp butter

2 garlic cloves, minced

5 ( 4") thyme sprigs

Mushroom-Hunter's Sauce

1/2 cup butter cut into 1/2" pieces, divided

2 cups thinly sliced fresh stemmed shitake mushrooms

1 small shallot, finely chopped

1/2 cup white cooking wine

1/4 cup tomato puree

1 cup Vegetable stock

2 tsp fresh Thyme

1/2 tsp kosher salt

1/4 tsp pepper

Prepare the pan seared rib-eye.  Preheat oven to 400 degrees.  Heat oil in a large cast iron skillet over medium high heat until shimmering and just beginning to smoke, 2 - 3 minutes.  

Pat steak dry with paper towels; sprinkle with salt and pepper.  Add steak to skillet; cook undisturbed until evenly browned, 4 - 5 minutes.  Reduce heat to medium, and flip steak.   Add butter, garlic and thyme.  Cook basting steak constantly with butter mixture until garlic caramelizes and sides of steak are no longer pink, 4 - 5 minutes.  Transfer skillet to preheated oven and cook until a thermometer inserted into the thickest portion of the steak registers 130 degrees, 6 - 9 minutes. Transfer steak to a cutting board and let stand uncovered for 5 minutes. 

Prepare the Mushroom-Hunter's Sauce:  

Melt 2 Tbsp butter in a large skillet over medium heat.  Add mushrooms and cook, stirring occasionally, until lightly browned, 5 -6 minutes.  Add shallot, cook stirring constantly until tender about 1 minute.    Add wine and cook undisturbed until almost dry, about 2 minutes.  Add tomato puree and stock; cook stirring occasionally until mixture bubbles and thickens 8 - 10 minutes.  

Remove skillet from heat.  Add remaining 6 Tbsp butter to mushroom mixture, 1 Tbsp at a time, whisking constantly after each addition, until mixture is well combined and sauce it glossy.  Stir in thyme, salt and pepper.  Remove from heat.

Cut steak into 1/2" thick slices.  Spoon Mushroom-Hunter's Sauce over slice steak; garnish with thyme leaves.  Serve immediately  

Enjoy!