Air Fryer Grilled Cheese

Bahan-bahan (1 porsi)

• 2 teaspoons unsalted butter (softened (or butter spread))
• 2 slices good quality whole grain bread
• 1 ounce shredded sharp cheddar cheese (about 1 heaping tablespoon or 1 deli slice)
• 1 ounce shredded gruyere (fontina, gouda or similar melty, nutty white cheese (about 1 heaping tablespoon) or 1 deli slice)
• 1 tablespoon nonfat plain Greek yogurt (or 1 tablespoon mayo if you insist)
• 2 teaspoons Dijon mustard
• Pinch kosher salt