Ingredients

1 pound fresh lump crab meat, picked over
2 tablespoons fresh lime juice, or to taste
1/2 cup mayonnaise
2 teaspoons Creole mustard
4 (1-inch-thick) slices brioche
Unsalted butter, softened, if desired
4 tablespoons freshly grated Parmesan
Accompaniment: lime wedges
Garnish: chopped fresh chives

Directions

Preheat broiler.

Put lump crab meat in a bowl but do not shred. Add 1 tablespoon lime juice and toss to combine.

In a small bowl whisk together remaining tablespoon lime juice, mayonnaise, and mustard until smooth. Pour
sauce over crab and toss to coat. Season crab mixture with salt and pepper and chill, covered, 30 minutes.

Lightly toast brioche and with a 3 1/4-inch round cutter cut out rounds. Lightly butter toast. Spoon one
fourth crab mixture into a 1/2-cup measure. Holding a toast round on top of mixture in measure, invert crab
onto round and set on an ungreased baking sheet. Repeat procedure with remaining crab mixture and rounds and
sprinkle 1 tablespoon Parmesan over each sandwich. Broil sandwiches about 3 inches from heat until cheese is
melted and golden, 1 to 2 minutes.

Serve sandwiches with lime wedges and garnish with chives.