Roast Beef with Bourbon Mushroom Sauce

Preheat oven to 300 degrees F. Add oil to saute pan. Season meat on all sides with salt and pepper. Sear meat on all sides, about 2 to 3 minutes each side. Place meat on sheet tray with a rack. Roast meat for 30 to 40 minutes. Crank oven up to 450 degrees F. and roast for an additional 15 to 20 minutes until crust forms and meat is nicely colored. When done, allow to rest before slicing. In a small bowl reserve juice for Bourbon Mushroom Sauce. In a large saucepan over medium-high heat, add 4 tablespoons butter. Add garlic , mushrooms and onion and cook for 4 to 5 minutes until nicely Add flour and mix well to form pasty roux.