Heat up olive oil in a skillet on high heat. When the oil is hot, add in your steak cubes. Use salt and pepper to season them well.
Cook the steak for about 2 minutes. This ensures that they get seared nicely. Cook for an additional 2 minutes to brown them slightly. This may need to be done in a few batches if your skillet isn’t big enough to accommodate all the beef at once.
Move the steak to a plate and then add in butter to your skillet. Turn the heat down to medium. Once your butter melts, add in red pepper flakes and garlic. Cook these for just 30 seconds- long enough to let the garlic start giving off a scent and turn brown.
Serve by covering the steak with garlic butter and use parsley to garnish.