1 cup of cremini mushroom
1 cup of balsamic vinegar
Slice the mushrooms very thin. Heat up olive oil in a large pan and sautee the mushrooms with salt and pepper for about 9-10min. When cool down, put them in the bowl of the food processor and pulse a few times.
Rub one tbsp of olive oil onto the steak. Spread the mushroom mixtures on both sides of the meat. Heat up 1 tbsp of olive oil in a large pan and seared the steak for 7 to 8 minutes on each side. Place in the oven on 350 covered for 20 minutes.
Heat up the balsamic vinegar and simmer until it’s reduced by half. Pour over the steak.