01 - Preheat oven to 375°F.
02 - Combine cream cheese, sour cream, mayonnaise, Dijon mustard, Worcestershire sauce, and hot sauce in a medium bowl. Mix until completely smooth.
03 - Gently fold in crab meat, mozzarella, Parmesan, green onions, red bell pepper, parsley, garlic powder, Old Bay, pepper, and salt. Mix until just combined, taking care not to break up crab pieces.
04 - Transfer mixture to a 1-quart baking dish and smooth the top evenly.
05 - Bake for 20 minutes until dip is hot, bubbly, and lightly golden on top.
06 - While dip bakes, arrange baguette slices on a baking sheet, brush lightly with olive oil, and bake for 8-10 minutes until golden and crisp, turning once halfway through.
07 - Serve warm crab dip immediately with crackers and crostini on the side.