Heat chocolate in the microwave on 30 second intervals until melted. Chill in fridge for 10-15 minutes until thick enough to spread. Set aside 1/2 cup.
Use the back of a spoon to spread a layer of chocolate around the inside of your glass. Spread more around the rim of the glass. It should be thick, but if it starts to harden or ‘seize’ you can microwave it on 10 second intervals until it softens.
Make the chocolate shake by blending ice cream, milk, 1/2 cup of the melted chocolate and graham crackers until smooth.
Use leftover melted chocolate as ‘glue’ to attach pieces of HERSHEY’S Milk Chocolate Bars to Microwave on 10 second intervals if the chocolate starts to seize.
Spoon a generous spoonful of ice cream into glass. Pour in milkshake mixture.
Pipe whipped cream on top using an open star piping tip.
Sprinkle with crushed graham cracker. Drizzle with chocolate syrup.
Place two large marshmallows on a heat-safe surface and toast with a kitchen torch.