01 - Set oven to 375°F for baking the dip and toasting the crostini.
02 - Combine cream cheese, mayonnaise, and sour cream in a large mixing bowl. Beat until completely smooth and creamy.
03 - Add Worcestershire sauce, hot sauce, Dijon mustard, garlic powder, onion powder, paprika, black pepper, salt, and lemon juice. Mix thoroughly to incorporate all seasonings.
04 - Gently fold in crab meat, grated Parmesan cheese, chives, and parsley. Be careful not to break up the crab lumps.
05 - Spread the dip mixture evenly into a 1 to 1.5-quart oven-safe baking dish. Smooth the top surface.
06 - Sprinkle shredded mozzarella, Parmesan cheese, and panko breadcrumbs uniformly across the surface of the dip.
07 - Bake for 18 to 20 minutes until the topping is golden brown and the dip is bubbling around the edges.
08 - While dip bakes, arrange baguette slices on a baking sheet. Brush lightly with olive oil. Toast in oven for 7 to 8 minutes, turning once, until golden and crisp.
09 - Remove dip from oven and allow to cool for 5 minutes. Serve warm alongside toasted crostini and assorted crackers.