01 -
In a small bowl, gently combine the chopped lobster, cream cheese, mayonnaise, chives, lemon zest, salt, and pepper until evenly blended.
02 -
Place bread slices on a clean surface and spread unsalted butter evenly on one side of each slice.
03 -
Distribute half of the Gruyère and sharp cheddar evenly on the unbuttered sides of two bread slices.
04 -
Spoon the lobster filling evenly over the cheese layers, then sprinkle the remaining shredded cheeses on top.
05 -
Cover each with the remaining bread slices, buttered side facing outward.
06 -
Heat a large skillet or griddle over medium heat. Cook sandwiches 3 to 4 minutes per side, pressing lightly, until the bread is golden and cheese is melted.
07 -
Remove from heat, let rest for 1 minute, slice, and serve immediately while warm.