Slice steak into roughly 2" pieces and set aside in a mixing bowl.
In a small bowl, combine seasoning blend ingredients, then add to the mixing bowl with the steak bites and toss to combine well.
Heat a large heavy bottomed skillet over MED HIGH heat. Do this while the skillet is dry, until you see wisps of smoke.
Add 1 Tbsp of vegetable oil and swirl to coat the pan.
Add about half the steak (adding less steak if the skillet isn’t very big - don’t overcrowd).
Sear for 2 minutes without flipping, then flip over and sear another 2 minutes, until well browned. Set aside and repeat with remaining vegetable oil and steak bites.
Reduce heat to MED LOW and use the same skillet (don’t wash it!). Add butter, and once melted, add garlic. Cook about 30 seconds, scraping browned bits from the bottom of the pan.
Turn off the heat, add steak bites back to the skillet and stir to combine with the garlic butter.
Serve hot, sprinkled with minced fresh parsley.