Add milk and heavy cream to a medium saucepan over medium heat.
Meanwhile, add chocolate chips to a small microwave-safe bowl and microwave on 30-second intervals until melted, stirring between each one. Dip the rim of your mugs in the chocolate and then dip them in the crushed graham cracker and set aside.
Add remaining melted chocolate to milk and cream along with the honey, simple syrup, and chocolate syrup and whisk together. Whisk in the pudding mix little by little until fully combined. Bring mixture to a low simmer and remove from heat.
Whisk in the whiskey and pour into prepared mugs. top with marshmallows or marshmallow fluff and use a kitchen torch to toast the tops. The toasting is optional.