Bourbon Pumpkin Pie Milkshake. 2 cups vanilla ice cream, 1/2 cup milk, 1/4 cup cream or half and half, 1 tablespoon vanilla extract, 2/3 cup pureed pumpkin, 1/2 tablespoon pumpkin pie spice, 1/3 cup graham cracker crumbs, 2-3 ounces of bourbon frosting + sprinkles (or cinnamon sugar) for glasses. Add all ingredients to a blender and mix until combined. Rim glasses with a light coating of frosting then dip in sprinkles. Pour in shake and sprinkle cinnamon on top. Top with whipped cream.