Hot Ranch Crab Dip

Name: Hot Ranch Crab Dip
Ingredients: 4 ounces cream cheese, at room temperature; 1/4 cup mayonnaise; 1/4 cup sour cream; 1/4 cup buttermilk; 1 tablespoon all-purpose flour; 2 teaspoons Worcestershire sauce; 1 teaspoon hot sauce; 1/4 teaspoon grated lemon zest; 1 clove garlic, finely grated; 1/4 cup grated parmesan cheese, plus more for sprinkling; Kosher salt; 3 scallions, thinly sliced; 2 tablespoons chopped fresh chives, plus more for topping; 1 pound lump crabmeat, picked through; Paprika, for topping; Toasted bread or crackers, for dipping