Season steak with salt and pepper. Drizzle on olive oil and grill five to six minutes on each side for medium rare, or until desired temperature is reached. Let rest until ready to plate.

For the glaze, combine all ingredients and mix.

Heat a skillet on high heat and add oil, mushrooms, salt, and pepper. Sear undisturbed for three minutes, flip the mushrooms, and sear again for three minutes to develop a golden crust on the mushrooms. Towards the end, add the glaze to the mushrooms and turn off the heat. (The residual heat is enough to cook the glaze).

Plate the mushrooms on a platter. Slice the steak on a bias and place over the mushrooms. Garnish with flaky salt and parsley.