01 - Pat the steak cubes dry using paper towels, then season lightly with salt and black pepper.
02 - In a mixing bowl, combine softened butter, minced garlic, parsley, chives, dill, Dijon mustard, hot sauce, smoked paprika, crushed red pepper flakes, lemon zest, lemon juice, salt, and black pepper until fully blended. Set aside.
03 - Heat olive oil in a large skillet over medium-high heat. Arrange steak cubes in a single layer and sear for 2 minutes per side until well browned, working in batches if needed.
04 - Lower heat to medium, return all steak cubes to the pan, and add the cowboy butter sauce. Toss thoroughly to coat, cooking for 1 to 2 minutes until the butter is melted and steak is cooked to preferred doneness.
05 - Serve immediately, garnished with additional fresh herbs if desired.