Season the steak bites generously with salt and pepper.
Preheat a skillet over high heat until very hot.
Add the steak bites in a single layer, without overcrowding, and sear until browned on all sides, cooking in batches if needed.
Remove the steak bites and let them rest for a few minutes.
In the same pan, melt the butter and sauté the minced garlic until fragrant and golden brown.
Pour the garlic butter over the cooked steak bites, tossing to coat.
Garnish with freshly chopped parsley and serve.