Dates with Blue Cheese Wrapped in Prosciutto

1/3 cup crumbled blue cheese  16 Medjool dates, pitted  3 bags basil   4 wide, thin slices prosciutto di Parma, each cut into 4 long strips  16 toothpicks, soaked in water 10 minutes  Heat broiler to low. Spoon 1 teaspoon cheese into each date; wrap with a basil leaf, then a prosciutto strip. Secure with a toothpick. Broil until cheese bubbles, about 3 minutes. Serve warm.