Preheat the oven to 375 degrees F. Combine the cream cheese, mayonnaise, sour cream, buttermilk and flour in a large bowl. Add the Worcestershire sauce, hot sauce, lemon zest, garlic, parmesan and 1 teaspoon salt; beat with a mixer on medium-high speed until smooth and creamy, about 2 minutes. Add the scallions, chives and crabmeat and continue beating until combined.
Transfer the mixture to a shallow 1-quart baking dish; sprinkle with more parmesan and bake until lightly golden and heated through, 25 to 30 minutes. Top with paprika and more chives. Serve with bread or crackers.
Photograph by Christopher Testani
Courtesy of Food Network Magazine