In this crab cake recipe, muffin tin cups are used to shape the cakes, so you get perfectly portioned cakes that won't fall apart when you cook them.
In a large bowl, whisk the mayonnaise with 1/2 cup of the panko and the scallions, lime zest, lime juice, 1 teaspoon salt and 1/2 teaspoon pepper. Fold in the crab. Lightly pack the crab mixture into the cups of a 12-cup muffin pan. Freeze until the cakes are barely firm, about 30 minutes.2.
Invert the crab cakes onto a large baking sheet. In a shallow bowl, beat the egg. Spread the remaining 1 cup of panko in another shallow bowl. Dip the crab cakes in the egg and then dredge in the panko, pressing lightly to help it adhere.3.
In a large nonstick skillet, heat 3 tablespoons of the olive oil until shimmering. Add 6 of the crab cakes and cook over moderately high heat, turning once, until golden, about 4 minutes total. Transfer to the baking sheet. Repeat with the remaining 3 tablespoons of oil and 6 crab cakes. Transfer the baking sheet to the oven and bake for 5 minutes, until heated through. Transfer the crab cakes to plates and serve with spicy mayonnaise.