01 - Pat steak cubes dry with paper towels. Season evenly with salt, pepper, Italian herbs, and smoked paprika, ensuring all pieces are coated.
02 - Heat 1 tablespoon butter in a large skillet over medium-high heat. Sear steak cubes in batches for 1-2 minutes per side until browned. Transfer seared steak to the crockpot.
03 - Add minced garlic and chopped onion to the skillet, adding more butter if necessary. Sauté for 2-3 minutes until fragrant and softened.
04 - Pour beef broth and Worcestershire sauce into the skillet, scraping up browned bits from the bottom. Pour this mixture over the steak in the crockpot.
05 - Place remaining butter on top of the steak. Stir gently to combine ingredients. Cover and cook on LOW for 4 hours until steak reaches desired tenderness.
06 - Taste and adjust seasoning if needed. Garnish with freshly chopped parsley and serve hot.