01 - Preheat the oven to 375°F.
02 - In a medium bowl, combine the cream cheese, sour cream, mayonnaise, Dijon mustard, Worcestershire sauce, and hot sauce. Mix until completely smooth.
03 - Gently fold in the crab meat, mozzarella, Parmesan, green onions, red bell pepper, parsley, garlic powder, Old Bay seasoning, black pepper, and salt until just combined.
04 - Transfer the mixture to a 1-quart baking dish and smooth the top evenly.
05 - Bake for 20 minutes or until the dip is hot and bubbling, and the top is lightly golden.
06 - While the dip bakes, arrange baguette slices on a baking sheet, brush lightly with olive oil, and bake in the oven for 8–10 minutes or until golden and crisp, turning once halfway through.
07 - Serve the warm crab dip immediately with crackers and crostini on the side.