1. Pat the steak bites dry with paper towels and season them with salt, black pepper, and paprika.

2. Heat the olive oil in a large skillet over medium-high heat until hot.

3. Add the steak bites in a single layer and sear for 1 to 2 minutes per side until browned, working in batches if needed.

4. Transfer the steak to a plate and add the sliced onion to the skillet.

5. Cook the onion for 3 to 4 minutes until softened and lightly golden.

6. Add the butter, minced garlic, and red pepper flakes, then stir for about 30 seconds until fragrant.

7. Pour in the beef broth and Worcestershire sauce, scraping up the browned bits from the pan.

8. Let the sauce simmer for 2 to 3 minutes until slightly reduced.

9. Return the steak bites to the skillet and toss to coat in the garlic butter sauce.

10. Sprinkle with fresh parsley and serve hot.