Root Beer Float Pie

INGREDIENTS

1 1/2 cups

crushed graham cracker crumbs

1/4 cup

sugar

1/8 tsp

salt

6 tbsp

butter, melted

1 8 ounce container

frozen whipped topping, thawed

3/4 cup

cold root beer (regular or diet)

1/3 cup

non-fat milk

1 1 ounce package

sugar-free instant vanilla pudding mix

2 tsp

Root Beer concentrate, optional

whipped cream, for garnish