01 -
Heat olive oil and 2 tablespoons butter in a small skillet over medium heat. Add minced garlic and cook until fragrant, about 1 minute. Stir in lemon zest and cook for another minute.
02 -
Add the cooked shrimp to the garlic butter mixture and cook just until heated through, about 2 minutes. Don't overcook or the shrimp will become tough.
03 -
Transfer shrimp mixture to a bowl and drizzle with lemon juice. Let cool while you grate the cheeses. This prevents the cheese from melting prematurely.
04 -
Stir the grated Gruyere, mozzarella, and black pepper into the cooled shrimp mixture until well combined.
05 -
Spread softened butter on one side of each bread slice. Sprinkle Parmesan cheese over the butter and lightly press down so it sticks to create a crispy, flavorful crust.
06 -
Place two slices butter-side down and top each with half of the shrimp and cheese mixture. Top with remaining bread slices, butter-side up.
07 -
Preheat air fryer to 400°F for 5 minutes. Place sandwiches in basket and cook 3 minutes, flip, then cook 2 more minutes until golden and cheese is melted.
08 -
Heat a non-stick skillet over medium heat. Cook sandwiches until bottom is golden and crispy, about 3-4 minutes. Flip and cook until second side is golden and cheese is fully melted.
09 -
Remove from heat and let cool for 1-2 minutes before cutting. Serve immediately while the cheese is still gooey and the bread is crispy.