01 - Pat steak cubes dry with paper towels and season evenly with kosher salt, freshly ground black pepper, and smoked paprika.
02 - Heat a large skillet or cast-iron pan over high heat. Add 1 tablespoon of unsalted butter. When melted and foaming, arrange half the steak cubes in a single layer. Sear for 1 to 2 minutes per side until browned and just cooked through. Transfer to a plate and repeat with remaining steak, adding a small amount of oil if necessary.
03 - Reduce heat to medium-low. Add remaining 2 tablespoons unsalted butter and minced garlic to the pan. Cook, stirring frequently, for about 30 seconds until fragrant.
04 - Return all steak bites to the pan. Gently toss to coat thoroughly in the garlic butter. Stir in fresh parsley and thyme leaves.
05 - Serve immediately, garnishing with flaky sea salt and extra chopped parsley as desired.