1. Prepare the Garlic Butter:

1. In a small bowl, combine the softened butter, minced garlic, parsley, thyme, lemon zest (if using), salt, and pepper.
2. Mix thoroughly until well blended.
3. Roll the butter into a log using parchment paper, twist the ends to seal, and refrigerate for at least 30 minutes or until firm.

2. Prepare the Steaks:

1. Remove the steaks from the refrigerator 30 minutes before grilling to let them come to room temperature.
2. Pat the steaks dry with paper towels and brush them lightly with olive oil.
3. Season generously with salt, pepper, and smoked paprika if desired.

3. Preheat the Grill:

1. Preheat your grill to high heat (450°F to 500°F). For charcoal grills, heat the coals until they are covered with white ash.
2. Clean the grates thoroughly and oil them lightly to prevent sticking.

4. Grill the Steaks:

1. Place the steaks on the grill over direct heat.
2. Cook for 3-5 minutes on each side for medium-rare (adjust according to your desired doneness). Use a meat thermometer to check the internal temperature (130°F for medium-rare, 140°F for medium).
3. Move the steaks to indirect heat if needed to cook further without burning the outside.

5. Add the Garlic Butter:

1. In the last minute of grilling, place a slice of the chilled garlic butter on each steak. Allow it to melt slightly.
2. Remove the steaks from the grill and transfer them to a plate. Cover loosely with foil and let rest for 5-10 minutes.

6. Serve:
Slice the steaks against the grain and serve hot with additional garlic butter on top, if desired. Pair with your favorite sides for a complete meal.