Preheat your oven to 400°F (200°C). In a mixing bowl, whisk together mayonnaise, egg, Dijon mustard, Old Bay seasoning, and Worcestershire sauce until smooth.

Gently fold in lump crab meat with a rubber spatula, preserving large lumps for texture.

Spoon crab mixture into four ramekins, ensuring not to pack tightly.

Sprinkle sharp white cheddar cheese over each ramekin and drizzle melted butter on top.

Bake for 15-20 minutes until bubbling and golden brown.

Look for bubbly edges and a nicely browned cheese crust to know it's ready.