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 and creamy.
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. Do not overmix to maintain crab texture.
04 - Transfer the mixture to a 1-quart baking dish and smooth the top evenly with a spatula.
05 - Bake for 20 minutes or until the dip is hot and bubbling throughout, and the top is lightly golden brown.
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 cooking.
07 - Serve the warm crab dip immediately with crackers and crostini on the side for dipping.