Preheat broiler and adjust rack so that it is about 4 inches from heat source.
Beat together cream cheese, mayonnaise, gorgonzola cheese and green onions; season with salt and pepper. Fold in grapes and pine nuts. Spread a tablespoon of cheese mixture on each baguette slice. Broil until heated and lightly browned, about 3 minutes. Serve immediately.*To toast pine nuts: Bake in oven preheated to 350 F until lightly browned, about seven minutes.