Combine chocolate, 1 tablespoon milk, and butter or margarine in a medium, microwave safe bowl. Microwave on high for 1 to 1 1/2 minutes, stirring every 30 seconds. Stir until chocolate is completely melted. Spread evenly in pie crust.
Arrange banana slices over chocolate.
Pour 1 1/2 cups milk into a large bowl. Add pudding mix, and beat with wire whisk for 2 minutes. Stir in 1 1/2 cups coconut. Spoon over banana slices in crust.
Spread whipped topping over pie. Sprinkle with toasted coconut. Refrigerate 4 hours, or until set. Store in refrigerator.
