Gather all your ingredients and tools. Preheat your air fryer to 400°F (200°C) for about 5 minutes to get it nice and hot.
In a mixing bowl, combine the melted butter, grated Parmesan cheese, garlic powder, Italian seasoning, and crushed red pepper flakes. Stir until well blended.
Place the slices of Texas toast on a clean countertop or cutting board. Using your baking brush, generously spread the butter mixture over one side of each slice.
On top of the buttered side, sprinkle a portion of shredded mozzarella cheese, followed by a slice of Provolone cheese.
Carefully place the prepared Texas toast slices in the air fryer basket, buttered side up. Air fry for about 5-6 minutes, or until the cheese is melted and bubbly.
Once the toast is done, remove it carefully from the air fryer. Sprinkle with chopped fresh parsley and serve warm.
