To begin, cut your sirloin steak into one-inch cubes. Heat 1 tablespoon of olive oil in a medium-sized skillet over medium-high heat. Season the steak bites with salt and pepper, and add them to the pan, cooking until they achieve a golden brown hue.

Remove the cooked steak and place it in a serving dish.

Now, for the cowboy butter sauce, in a small bowl, mix together melted butter, lemon juice, garlic, mustard, cayenne, and paprika. Whisk the sauce until it’s well combined.

Next, incorporate parsley, chives, crushed red pepper flakes, and thyme, and season the sauce with salt and pepper.

Drizzle this delightful sauce over the steak bites and serve. Any extra can be used as a dipping sauce for those who desire more flavor!