Mix Your Garlic Butter You can do this while the skillet heats. Put the softened butter in a small bowl. Add the minced garlic, parsley or Italian seasoning, salt, pepper, and mayo if you’re using it. Stir until everything looks even and creamy. No big clumps of garlic in one spot. Taste a tiny bit on the edge of a bread slice. Too strong? Add a little more butter. Not enough garlic? Add half a clove more. Quick shortcut: No fresh garlic? Use ½ teaspoon garlic powder and a pinch of onion powder. It’s still really good.

Build the Sandwich Lay out your 4 slices of bread on a board. Spread a generous layer of garlic butter on one side of each slice. This will be the outside. Flip 2 slices so the buttered side is now touching the board. Divide your shredded cheese between those two slices (around ½ cup on each). If you’re using cream cheese or a soft spread, dot or spread 1–2 tablespoons on top of the shredded cheese. Add any extras now: a bit of bacon, one or two tomato slices, a few onions. Top each one with the remaining bread slices, buttered side facing out. You should now have two “garlic bread” sandwiches, ready to crisp.

Cook It in a Skillet (Classic Method) This is the version most people start with. Heat a nonstick or cast iron skillet over medium-low heat. When the pan feels warm (you can hover your hand a bit above it), place the sandwiches in. Cook the first side for about 4–5 minutes, until it’s golden and crisp. If it’s browning too fast, lower the heat. Flip the sandwiches carefully with a spatula. Cover the pan with a lid and cook another 4–5 minutes. The lid traps a bit of steam so the cheese melts all the way through. Check the bottom: it should be golden, not dark brown. When the cheese looks melty and just starting to ooze at the edges, take them out. Let the sandwiches sit on a cooling rack or a plate for a minute. That short rest stops the cheese from flooding out when you cut into it.

Air Fryer Method (Hands-Off and Clean) If your air fryer lives on the counter, this is shockingly easy. Preheat the air fryer to 370–375°F (185–190°C) for a few minutes. Place the sandwiches in the basket in a single layer. Cook 3–4 minutes, then flip. Cook another 3–4 minutes, until the bread is crisp and the cheese has melted. If the top looks pale, add 1 extra minute. If it’s going dark too fast, lower the temperature next time. Cleanup is basically the basket and a knife. That’s it.