Preheat the Blackstone grill over high heat (approximately 450 degrees Fahrenheit) and drizzle the oil onto the grill. Spread it around with a spatula.
Add the steak to the Blackstone on top of the oil. Season it with salt and pepper.
Cook the steak for 2 minutes without flipping it so that they get browned.
Then gently toss the steak and cook it for 2-3 more minutes until the steak is cooked through and browned.
Turn the heat down to medium. Add the minced garlic and butter to the grill on top of the steak. Cook for about 30-60 seconds until the butter is melted and the garlic is aromatic.
Remove from the grill, top with parsley, serve warm and enjoy!