Preheat the oven to 400°F. Line a rimmed baking sheet with parchment paper.
In a medium mixing bowl, combine the 1/2 cup mayonnaise, 1 teaspoon Worcestershire sauce, 1 teaspoon Dijon mustard, 2 teaspoons Old Bay seasoning, 1 tablespoon fresh lemon juice, 1/2 cup seasoned bread crumbs, and 1 large egg. Stir until a paste forms. If it is more like dough, add more mayonnaise until it is a paste.
Gently, fold in the 2 pounds lump blue crab meat or a blend, being gentle to not break apart the biggest pieces.
Using a 1 1/2 tablespoon cookie scoop, scoop out the balls to the prepared baking sheet.
Bake for 10 minutes, then put on broil for 1 minute to get nicely browned tops.
Remove and baste with melted 2 tablespoons unsalted butter.
Serve with your favorite dipping sauce.
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