Begin by placing the cubed sirloin steak in a large mixing bowl. Generously season with salt and pepper, ensuring each piece is thoroughly coated for maximum flavor.
In a large skillet, heat the olive oil over medium-high heat until shimmering but not smoking.
Carefully add the seasoned steak cubes to the skillet in a single layer. Allow them to cook undisturbed for about 2-3 minutes to develop a beautifully seared crust on one side.
Once a nice sear is achieved, flip the steak bites over using tongs. Cook for another 2-3 minutes for the ideal medium-rare doneness, or adjust the time to reach your preferred level of doneness.
Upon cooking to your satisfaction, lower the heat to medium-low and push the steak bites to one side of the skillet to create space.
On the cleared side, add the unsalted butter, minced garlic, chopped rosemary, and thyme. Allow the butter to melt and the garlic to cook gently, becoming fragrant—approximately 1 minute.
Once the garlic butter is ready, stir it together, and then toss the steak bites in the garlicky goodness until they are evenly coated and glistening.
Carefully remove the skillet from the heat, and finish the dish by garnishing with freshly chopped parsley before serving to add a vibrant touch.
Notes
Serve on a warm platter and drizzle with remaining garlic butter for an elegant touch.