Season steak with salt and pepper, then add it to a large hot skillet with oil. Cook the steak on medium-high until you reach your preferred steak doneness (check with a meat thermometer). Remove steak from pan and keep warm.

Using the same skillet, add the butter and saute the mushrooms until they get soft. Use the wine to deglaze the pan after bringing it to a boil.

Stir in the remaining ingredients. Slice the steak in half and serve with your delicious sauce.