Preheat the air fryer to 350°F (175°C).
In a small mixing bowl, combine softened butter, minced garlic, dried parsley, and salt until a uniform paste forms.
Spread the garlic butter mixture evenly across the top surface of each bread slice.
Sprinkle the grated Parmesan cheese over the buttered surface of the bread.
Place the bread slices in the air fryer basket in a single layer, ensuring they do not overlap.
Cook at 350°F (175°C) for 4 to 6 minutes, or until the bread is toasted and the edges are golden brown.
Remove slices from the basket using tongs and serve immediately.