once hot, add in your onions and thyme and cook on a medium heat for about 15 minutes - stirring frequently. remove from heat and set aside.
now cook your steak. season the steak on both sides with salt, pepper, and smoked paprika - and carefully score each side lightly in a cross hatch pattern to prevent buckling. heat up a metal skillet til it's almost smoking. add your steak in a cook on each side 3-4 minutes. remove from skillet and let rest on a cutting board for 10-15 minutes.
while the steak is resting, make your cheese sauce. in a small saucepan, add your other tablespoon of butter in. once 