Add ice cubes to a blender and pulse to finely crush the ice.
Add the remaining ingredients in the order shown (ice cream first, to keep room temperature alcohol from melting the ice) and blend on High speed for 45 seconds, or until mixture is creamy.
Portion the mudslide drink evenly between two tall glasses. If desired, garnish with whipped cream and a drizzle of chocolate syrup.
Serve immediately, and enjoy!
Notes
Vanilla Mudslide - Use vanilla ice cream instead of chocolate.TGIF Copycat Mudslide - Use 2 scoops of vanilla ice cream and 4 scoops of chocolate.