In a large cast iron skillet over medium-high heat, add olive oil and butter, mushrooms, garlic, thyme, rosemary, and oregano. Cook for about 3 minutes or until tender. Remove and set aside on a plate.
Turn the skillet to high heat. Add the steaks. Cook on each side for 3 minutes or until outside is browned. Reduce heat to medium-high. Cook the steaks to the desired doneness. Mine took about 10 minutes flipping 3 times to get a medium well.
Right before the steaks are done, make the garlic butter compound. Mix the butter, garlic and fresh chopped herbs. Slather on top of steaks. Add the mushrooms back to the pan and heat through and let the butter melt into the steaks.