**Prepare the Garlic Butter:** In a mixing bowl, combine softened butter, minced garlic, chopped parsley, Parmesan cheese, salt, and pepper. Mix until well combined.
**Spread the Mixture:** Evenly spread the garlic butter mixture over the cut sides of the bread.
**Preheat the Air Fryer:** Preheat the air fryer to 350°F (175°C) for about 3 minutes.
**Cook the Garlic Bread:** Place the bread in the air fryer basket, cut side up. Cook for 5–7 minutes, or until the edges are golden and the butter is bubbly.
**Slice and Serve:** Remove from the air fryer and let cool slightly. Slice into pieces and serve warm.