Remove the steak from the refrigerator and season both sides with salt and pepper. Allow it to sit at room temperature for 30 minutes. DO NOT SKIP THIS STEP!
Cut the steak into approximately 1 1/2 inch pieces.
Heat a large skillet over high heat. Add the oil, then add the steak bites in a single layer, being careful not to overcrowd the pan. (*I did 2 batches using an 8 inch skillet.)
Sear for about 1 minute on each side, until a nice "crust" forms. Promptly remove the steak bites from the pan onto a plate and tent with foil.
Reduce the skillet heat to medium-low. Add the butter and let it melt completely. Then add the garlic and herbs. Cook, stirring, for about 2 minutes to release the flavors into the butter.
Turn off the heat and add the steak bites back into the skillet with the garlic herb butter. Spoon the butter over the steak and serve.